The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory (bnc#1068032).

  - CVE-2017-5753: Local attackers on systems with modern     CPUs featuring deep instruction pipelining could use     attacker controllable speculative execution over code     patterns in the Linux Kernel to leak content from     otherwise not readable memory in the same address space,     allowing retrieval of passwords, cryptographic keys and     other secrets. This problem is mitigated by adding     speculative fencing on affected code paths throughout     the Linux kernel. This issue is addressed for the     x86_64, the IBM Power and IBM zSeries architecture.

  - CVE-2017-5715: Local attackers on systems with modern     CPUs featuring branch prediction could use mispredicted     branches to speculatively execute code patterns that in     turn could be made to leak other non-readable content in     the same address space, an attack similar to     CVE-2017-5753. This problem is mitigated by disabling     predictive branches, depending on CPU architecture     either by firmware updates and/or fixes in the     user-kernel privilege boundaries. This is done with help     of Linux Kernel fixes on the Intel/AMD x86_64 and IBM     zSeries architectures. On x86_64, this requires also     updates of the CPU microcode packages, delivered in     separate updates. For IBM Power and zSeries the required     firmware updates are supplied over regular channels by     IBM. As this feature can have a performance impact, it     can be disabled using the 'nospec' kernel commandline     option.

  - CVE-2017-5754: Local attackers on systems with modern     CPUs featuring deep instruction pipelining could use     code patterns in userspace to speculative executive code     that would read otherwise read protected memory, an     attack similar to CVE-2017-5753. This problem is     mitigated by unmapping the Linux Kernel from the user     address space during user code execution, following a     approach called 'KAISER'. The terms used here are     'KAISER' / 'Kernel Address Isolation' and 'PTI' / 'Page     Table Isolation'. This update does this on the Intel     x86_64 and IBM Power architecture. Updates are also     necessary for the ARM architecture, but will be     delivered in the next round of updates. This feature can     be enabled / disabled by the 'pti=[on|off|auto]' or     'nopti' commandline options. The following security bugs     were fixed :

  - CVE-2017-17806: The HMAC implementation (crypto/hmac.c)     in the Linux kernel did not validate that the underlying     cryptographic hash algorithm is unkeyed, allowing a     local attacker able to use the AF_ALG-based hash     interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3     hash algorithm (CONFIG_CRYPTO_SHA3) to cause a kernel     stack-based buffer overflow by executing a crafted     sequence of system calls that encounter a missing SHA-3     initialization (bnc#1073874).

  - CVE-2017-17805: The Salsa20 encryption algorithm in the     Linux kernel did not correctly handle zero-length     inputs, allowing a local attacker able to use the     AF_ALG-based skcipher interface     (CONFIG_CRYPTO_USER_API_SKCIPHER) to cause a denial of     service (uninitialized-memory free and kernel crash) or     have unspecified other impact by executing a crafted     sequence of system calls that use the blkcipher_walk     API. Both the generic implementation     (crypto/salsa20_generic.c) and x86 implementation     (arch/x86/crypto/salsa20_glue.c) of Salsa20 were     vulnerable (bnc#1073792).

  - CVE-2017-15868: The bnep_add_connection function in     net/bluetooth/bnep/core.c in the Linux kernel did not     ensure that an l2cap socket is available, which allowed     local users to gain privileges via a crafted application     (bnc#1071470).

  - CVE-2017-13167: An elevation of privilege vulnerability     in the kernel sound timer. (bnc#1072876).

  - CVE-2017-16538: drivers/media/usb/dvb-usb-v2/lmedm04.c     in the Linux kernel allowed local users to cause a     denial of service (general protection fault and system     crash) or possibly have unspecified other impact via a     crafted USB device, related to a missing warm-start     check and incorrect attach timing     (dm04_lme2510_frontend_attach versus dm04_lme2510_tuner)     (bnc#1066569).

  - CVE-2017-17558: The usb_destroy_configuration function     in drivers/usb/core/config.c in the USB core subsystem     in the Linux kernel did not consider the maximum number     of configurations and interfaces before attempting to     release resources, which allowed local users to cause a     denial of service (out-of-bounds write access) or     possibly have unspecified other impact via a crafted USB     device (bnc#1072561).

  - CVE-2017-17450: net/netfilter/xt_osf.c in the Linux     kernel did not require the CAP_NET_ADMIN capability for     add_callback and remove_callback operations, which     allowed local users to bypass intended access     restrictions because the xt_osf_fingers data structure     is shared across all net namespaces (bnc#1071695).

  - CVE-2017-8824: The dccp_disconnect function in     net/dccp/proto.c in the Linux kernel allowed local users     to gain privileges or cause a denial of service     (use-after-free) via an AF_UNSPEC connect system call     during the DCCP_LISTEN state (bnc#1070771).

  - CVE-2017-16939: The XFRM dump policy implementation in     net/xfrm/xfrm_user.c in the Linux kernel allowed local     users to gain privileges or cause a denial of service     (use-after-free) via a crafted SO_RCVBUF setsockopt     system call in conjunction with XFRM_MSG_GETPOLICY     Netlink messages (bnc#1069702).

  - CVE-2017-15115: The sctp_do_peeloff function in     net/sctp/socket.c in the Linux kernel did not check     whether the intended netns is used in a peel-off action,     which allowed local users to cause a denial of service     (use-after-free and system crash) or possibly have     unspecified other impact via crafted system calls     (bnc#1068671).

  - CVE-2017-14106: The tcp_disconnect function in     net/ipv4/tcp.c in the Linux kernel allowed local users     to cause a denial of service (__tcp_select_window     divide-by-zero error and system crash) by triggering a     disconnect within a certain tcp_recvmsg code path     (bnc#1056982).

  - CVE-2017-11600: net/xfrm/xfrm_policy.c in the Linux     kernel through 4.12.3, when CONFIG_XFRM_MIGRATE is     enabled, did not ensure that the dir value of     xfrm_userpolicy_id is XFRM_POLICY_MAX or less, which     allowed local users to cause a denial of service     (out-of-bounds access) or possibly have unspecified     other impact via an XFRM_MSG_MIGRATE xfrm Netlink     message (bnc#1050231).

  - CVE-2017-7472: The KEYS subsystem in the Linux kernel     allowed local users to cause a denial of service (memory     consumption) via a series of     KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring     calls (bnc#1034862).

  - CVE-2017-16534: The cdc_parse_cdc_header function in     drivers/usb/core/message.c in the Linux kernel allowed     local users to cause a denial of service (out-of-bounds     read and system crash) or possibly have unspecified     other impact via a crafted USB device (bnc#1066693).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote NewStart CGSL host, running version MAIN 4.05, has kernel packages installed that are affected by multiple vulnerabilities:

  - It was found that AIO interface didn't use the proper     rw_verify_area() helper function with extended     functionality, for example, mandatory locking on the     file. Also rw_verify_area() makes extended checks, for     example, that the size of the access doesn't cause     overflow of the provided offset limits. This integer     overflow in fs/aio.c in the Linux kernel before 3.4.1     allows local users to cause a denial of service or     possibly have unspecified other impact via a large AIO     iovec. (CVE-2012-6701)

  - Integer overflow in the aio_setup_single_vector function     in fs/aio.c in the Linux kernel 4.0 allows local users     to cause a denial of service or possibly have     unspecified other impact via a large AIO iovec. NOTE:
    this vulnerability exists because of a CVE-2012-6701     regression. (CVE-2015-8830)

  - It was discovered that a remote attacker could leverage     the generation of IPv6 atomic fragments to trigger the     use of fragmentation in an arbitrary IPv6 flow (in     scenarios in which actual fragmentation of packets is     not needed) and could subsequently perform any type of a     fragmentation-based attack against legacy IPv6 nodes     that do not implement RFC6946. (CVE-2016-10142)

  - A race condition flaw was found in the ioctl_send_fib()     function in the Linux kernel's aacraid implementation. A     local attacker could use this flaw to cause a denial of     service (out-of-bounds access or system crash) by     changing a certain size value. (CVE-2016-6480)

  - It was found that when the gcc stack protector was     enabled, reading the /proc/keys file could cause a panic     in the Linux kernel due to stack corruption. This     happened because an incorrect buffer size was used to     hold a 64-bit timeout value rendered as weeks.
    (CVE-2016-7042)

  - It was found that when file permissions were modified     via chmod and the user modifying them was not in the     owning group or capable of CAP_FSETID, the setgid bit     would be cleared. Setting a POSIX ACL via setxattr sets     the file permissions as well as the new ACL, but doesn't     clear the setgid bit in a similar way. This could allow     a local user to gain group privileges via certain setgid     applications. (CVE-2016-7097)

  - A flaw was found in the Linux networking subsystem where     a local attacker with CAP_NET_ADMIN capabilities could     cause an out-of-bounds memory access by creating a     smaller-than-expected ICMP header and sending to its     destination via sendto(). (CVE-2016-8399)

  - A flaw was found in the Linux kernel key management     subsystem in which a local attacker could crash the     kernel or corrupt the stack and additional memory     (denial of service) by supplying a specially crafted RSA     key. This flaw panics the machine during the     verification of the RSA key. (CVE-2016-8650)

  - Use-after-free vulnerability in the snd_pcm_info()     function in the ALSA subsystem in the Linux kernel     allows attackers to induce a kernel memory corruption     and possibly crash or lock up a system. Due to the     nature of the flaw, a privilege escalation cannot be     fully ruled out, although we believe it is unlikely.
    (CVE-2017-0861)

  - A race condition issue was found in the way the raw     packet socket implementation in the Linux kernel     networking subsystem handled synchronization. A local     user able to open a raw packet socket (requires the     CAP_NET_RAW capability) could use this to waste     resources in the kernel's ring buffer or possibly cause     an out-of-bounds read on the heap leading to a system     crash. (CVE-2017-1000111)

  - A use-after-free flaw was found in the Netlink     functionality of the Linux kernel networking subsystem.
    Due to the insufficient cleanup in the mq_notify     function, a local attacker could potentially use this     flaw to escalate their privileges on the system.
    (CVE-2017-11176)

  - It was found that in the Linux kernel through v4.14-rc5,     bio_map_user_iov() and bio_unmap_user() in 'block/bio.c'     do unbalanced pages refcounting if IO vector has small     consecutive buffers belonging to the same page.
    bio_add_pc_page() merges them into one, but the page     reference is never dropped, causing a memory leak and     possible system lockup due to out-of-memory condition.
    (CVE-2017-12190)

  - A divide-by-zero vulnerability was found in the
    __tcp_select_window function in the Linux kernel. This     can result in a kernel panic causing a local denial of     service. (CVE-2017-14106)

  - A non-privileged user is able to mount a fuse filesystem     on RHEL 6 or 7 and crash a system if an application     punches a hole in a file that does not end aligned to a     page boundary. (CVE-2017-15121)

  - A use-after-free vulnerability was found when issuing an     ioctl to a sound device. This could allow a user to     exploit a race condition and create memory corruption or     possibly privilege escalation. (CVE-2017-15265)

  - The Linux kernel, before version 4.14.3, is vulnerable     to a denial of service in     drivers/md/dm.c:dm_get_from_kobject() which can be     caused by local users leveraging a race condition with
    __dm_destroy() during creation and removal of DM     devices. Only privileged local users (with CAP_SYS_ADMIN     capability) can directly perform the ioctl operations     for dm device creation and removal and this would     typically be outside the direct control of the     unprivileged attacker. (CVE-2017-18203)

  - A race condition leading to a NULL pointer dereference     was found in the Linux kernel's Link Layer Control     implementation. A local attacker with access to ping     sockets could use this flaw to crash the system.
    (CVE-2017-2671)

  - It was found that the original fix for CVE-2016-6786 was     incomplete. There exist a race between two concurrent     sys_perf_event_open() calls when both try and move the     same pre-existing software group into a hardware     context. (CVE-2017-6001)

  - A flaw was found in the Linux kernel's handling of     packets with the URG flag. Applications using the     splice() and tcp_splice_read() functionality could allow     a remote attacker to force the kernel to enter a     condition in which it could loop indefinitely.
    (CVE-2017-6214)

  - Kernel memory corruption due to a buffer overflow was     found in brcmf_cfg80211_mgmt_tx() function in Linux     kernels from v3.9-rc1 to v4.13-rc1. The vulnerability     can be triggered by sending a crafted NL80211_CMD_FRAME     packet via netlink. This flaw is unlikely to be     triggered remotely as certain userspace code is needed     for this. An unprivileged local user could use this flaw     to induce kernel memory corruption on the system,     leading to a crash. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out, although     it is unlikely. (CVE-2017-7541)

  - An integer overflow vulnerability in     ip6_find_1stfragopt() function was found. A local     attacker that has privileges (of CAP_NET_RAW) to open     raw socket can cause an infinite loop inside the     ip6_find_1stfragopt() function. (CVE-2017-7542)

  - Incorrect error handling in the set_mempolicy() and     mbind() compat syscalls in 'mm/mempolicy.c' in the Linux     kernel allows local users to obtain sensitive     information from uninitialized stack data by triggering     failure of a certain bitmap operation. (CVE-2017-7616)

  - The mm subsystem in the Linux kernel through 4.10.10     does not properly enforce the CONFIG_STRICT_DEVMEM     protection mechanism, which allows local users to read     or write to kernel memory locations in the first     megabyte (and bypass slab-allocation access     restrictions) via an application that opens the /dev/mem     file, related to arch/x86/mm/init.c and     drivers/char/mem.c. (CVE-2017-7889)

  - The IPv6 fragmentation implementation in the Linux     kernel does not consider that the nexthdr field may be     associated with an invalid option, which allows local     users to cause a denial of service (out-of-bounds read     and BUG) or possibly have unspecified other impact via     crafted socket and send system calls. Due to the nature     of the flaw, privilege escalation cannot be fully ruled     out, although we believe it is unlikely. (CVE-2017-9074)

  - In the Linux kernel versions 4.12, 3.10, 2.6, and     possibly earlier, a race condition vulnerability exists     in the sound system allowing for a potential deadlock     and memory corruption due to use-after-free condition     and thus denial of service. Due to the nature of the     flaw, privilege escalation cannot be fully ruled out,     although we believe it is unlikely. (CVE-2018-1000004)

  - A null pointer dereference in dccp_write_xmit() function     in net/dccp/output.c in the Linux kernel allows a local     user to cause a denial of service by a number of certain     crafted system calls. (CVE-2018-1130)

  - Modern Intel microprocessors implement hardware-level     micro-optimizations to improve the performance of     writing data back to CPU caches. The write operation is     split into STA (STore Address) and STD (STore Data) sub-     operations. These sub-operations allow the processor to     hand-off address generation logic into these sub-     operations for optimized writes. Both of these sub-     operations write to a shared distributed processor     structure called the 'processor store buffer'. As a     result, an unprivileged attacker could use this flaw to     read private data resident within the CPU's processor     store buffer. (CVE-2018-12126)

  - Microprocessors use a load port subcomponent to     perform load operations from memory or IO. During a load     operation, the load port receives data from the memory     or IO subsystem and then provides the data to the CPU     registers and operations in the CPUs pipelines. Stale     load operations results are stored in the 'load port'     table until overwritten by newer operations. Certain     load-port operations triggered by an attacker can be     used to reveal data about previous stale requests     leaking data back to the attacker via a timing side-     channel. (CVE-2018-12127)

  - A flaw was found in the implementation of the fill     buffer, a mechanism used by modern CPUs when a cache-     miss is made on L1 CPU cache. If an attacker can     generate a load operation that would create a page     fault, the execution will continue speculatively with     incorrect data from the fill buffer while the data is     fetched from higher level caches. This response time can     be measured to infer data in the fill buffer.
    (CVE-2018-12130)

  - A vulnerability was found in the     fs/inode.c:inode_init_owner() function logic of the     LInux kernel that allows local users to create files     with an unintended group ownership and with group     execution and SGID permission bits set, in a scenario     where a directory is SGID and belongs to a certain group     and is writable by a user who is not a member of this     group. This can lead to excessive permissions granted in     case when they should not. (CVE-2018-13405)

  - A Floating Point Unit (FPU) state information leakage     flaw was found in the way the Linux kernel saved and     restored the FPU state during task switch. Linux kernels     that follow the Lazy FPU Restore scheme are vulnerable     to the FPU state information leakage issue. An     unprivileged local attacker could use this flaw to read     FPU state bits by conducting targeted cache side-channel     attacks, similar to the Meltdown vulnerability disclosed     earlier this year. (CVE-2018-3665)

  - An error in the _sctp_make_chunk() function     (net/sctp/sm_make_chunk.c) when handling SCTP, packet     length can be exploited by a malicious local user to     cause a kernel crash and a DoS. (CVE-2018-5803)

  - ALSA sequencer core initializes the event pool on demand     by invoking snd_seq_pool_init() when the first write     happens and the pool is empty. A user can reset the pool     size manually via ioctl concurrently, and this may lead     to UAF or out-of-bound access. (CVE-2018-7566)

  - Uncacheable memory on some microprocessors utilizing     speculative execution may allow an authenticated user to     potentially enable information disclosure via a side     channel with local access. (CVE-2019-11091)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The openSUSE Leap 42.3 kernel was updated to 4.4.87 to receive various security and bugfixes.

The following security bugs were fixed :

  - CVE-2017-1000251: The native Bluetooth stack in the     Linux Kernel (BlueZ) was vulnerable to a stack overflow     vulnerability in the processing of L2CAP configuration     responses resulting in Remote code execution in kernel     space (bnc#1057389).

  - CVE-2017-14106: The tcp_disconnect function in     net/ipv4/tcp.c in the Linux kernel allowed local users     to cause a denial of service (__tcp_select_window     divide-by-zero error and system crash) by triggering a     disconnect within a certain tcp_recvmsg code path     (bnc#1056982).

  - CVE-2017-11472: The acpi_ns_terminate() function in     drivers/acpi/acpica/nsutils.c in the Linux kernel did     not flush the operand cache and causes a kernel stack     dump, which allowed local users to obtain sensitive     information from kernel memory and bypass the KASLR     protection mechanism via a crafted ACPI table     (bnc#1049580).

The following non-security bugs were fixed :

  - acpica: IORT: Update SMMU models for revision C     (bsc#1036060).

  - acpi/nfit: Fix memory corruption/Unregister mce decoder     on failure (bsc#1057047).

  - ahci: do not use MSI for devices with the silly Intel     NVMe remapping scheme (bsc#1048912).

  - ahci: thunderx2: stop engine fix update (bsc#1057031).

  - alsa: hda/realtek - Add support headphone Mic for ALC221     of HP platform (bsc#1024405).

  - arm64: mm: select CONFIG_ARCH_PROC_KCORE_TEXT     (bsc#1046529).

  - arm64: PCI: Fix struct acpi_pci_root_ops allocation     failure path (bsc#1056849).

  - arm64: Update config files. Enable ARCH_PROC_KCORE_TEXT

  - blacklist.conf: gcc7 compiler warning (bsc#1056849)

  - bnxt: add a missing rcu synchronization (bnc#1038583).

  - bnxt: do not busy-poll when link is down (bnc#1038583).

  - bnxt_en: Enable MRU enables bit when configuring VNIC     MRU (bnc#1038583).

  - bnxt_en: Fix and clarify link_info->advertising     (bnc#1038583).

  - bnxt_en: Fix a VXLAN vs GENEVE issue (bnc#1038583).

  - bnxt_en: Fix NULL pointer dereference in a failure path     during open (bnc#1038583).

  - bnxt_en: Fix NULL pointer dereference in reopen failure     path (bnc#1038583).

  - bnxt_en: fix pci cleanup in bnxt_init_one() failure path     (bnc#1038583).

  - bnxt_en: Fix ring arithmetic in bnxt_setup_tc()     (bnc#1038583).

  - bnxt_en: Fix TX push operation on ARM64 (bnc#1038583).

  - bnxt_en: Fix 'uninitialized variable' bug in TPA code     path (bnc#1038583).

  - bnxt_en: Fix VF virtual link state (bnc#1038583).

  - bnxt_en: initialize rc to zero to avoid returning     garbage (bnc#1038583).

  - bnxt_en: Pad TX packets below 52 bytes (bnc#1038583).

  - bnxt_en: Refactor TPA code path (bnc#1038583).

  - ceph: fix readpage from fscache (bsc#1057015).

  - cifs: add build_path_from_dentry_optional_prefix()     (fate#323482).

  - cifs: add use_ipc flag to SMB2_ioctl() (fate#323482).

  - cifs: Fix sparse warnings (fate#323482).

  - cifs: implement get_dfs_refer for SMB2+ (fate#323482).

  - cifs: let ses->ipc_tid hold smb2 TreeIds (fate#323482).

  - cifs: move DFS response parsing out of SMB1 code     (fate#323482).

  - cifs: remove any preceding delimiter from prefix_path     (fate#323482).

  - cifs: set signing flag in SMB2+ TreeConnect if needed     (fate#323482).

  - cifs: use DFS pathnames in SMB2+ Create requests     (fate#323482).

  - cpufreq: intel_pstate: Disable energy efficiency     optimization (bsc#1054654).

  - cxgb4: Fix stack out-of-bounds read due to wrong size to     t4_record_mbox() (bsc#1021424 bsc#1022743).

  - device-dax: fix cdev leak (bsc#1057047).

  - dmaengine: mv_xor_v2: do not use descriptors not acked     by async_tx (bsc#1056849).

  - dmaengine: mv_xor_v2: enable XOR engine after its     configuration (bsc#1056849).

  - dmaengine: mv_xor_v2: fix tx_submit() implementation     (bsc#1056849).

  - dmaengine: mv_xor_v2: handle mv_xor_v2_prep_sw_desc()     error properly (bsc#1056849).

  - dmaengine: mv_xor_v2: properly handle wrapping in the     array of HW descriptors (bsc#1056849).

  - dmaengine: mv_xor_v2: remove interrupt coalescing     (bsc#1056849).

  - dmaengine: mv_xor_v2: set DMA mask to 40 bits     (bsc#1056849).

  - drivers: base: cacheinfo: fix boot error message when     acpi is enabled (bsc#1057849).

  - edac, thunderx: Fix a warning during l2c debugfs node     creation (bsc#1057038).

  - edac, thunderx: Fix error handling path in     thunderx_lmc_probe() (bsc#1057038).

  - fs/proc: kcore: use kcore_list type to check for     vmalloc/module address (bsc#1046529).

  - gfs2: Do not clear SGID when inheriting ACLs     (bsc#1012829).

  - ib/hns: checking for IS_ERR() instead of NULL     (bsc#1056849).

  - ibmvnic: Clean up resources on probe failure     (fate#323285, bsc#1058116).

  - ib/rxe: Add dst_clone() in prepare_ipv6_hdr()     (bsc#1049361).

  - ib/rxe: Avoid ICRC errors by copying into the skb first     (bsc#1049361).

  - ib/rxe: Disable completion upcalls when a CQ is     destroyed (bsc#1049361).

  - ib/rxe: Fix destination cache for IPv6 (bsc#1049361).

  - ib/rxe: Fix up rxe_qp_cleanup() (bsc#1049361).

  - ib/rxe: Fix up the responder's find_resources() function     (bsc#1049361).

  - ib/rxe: Handle NETDEV_CHANGE events (bsc#1049361).

  - ib/rxe: Move refcounting earlier in rxe_send()     (bsc#1049361).

  - ib/rxe: Remove dangling prototype (bsc#1049361).

  - ib/rxe: Remove unneeded initialization in prepare6()     (bsc#1049361).

  - ib/rxe: Set dma_mask and coherent_dma_mask     (bsc#1049361).

  - iommu/arm-smmu-v3, acpi: Add temporary Cavium SMMU-V3     IORT model number definitions (bsc#1036060).

  - iommu/arm-smmu-v3: Increase CMDQ drain timeout value     (bsc#1035479). Refresh patch to mainline version

  - irqchip/gic-v3-its: Fix command buffer allocation     (bsc#1057067).

  - iwlwifi: mvm: do not send CTDP commands via debugfs if     not supported (bsc#1031717).

  - kernel/*: switch to memdup_user_nul() (bsc#1048893).

  - lightnvm: remove unused rq parameter of     nvme_nvm_rqtocmd() to kill warning (FATE#319466).

  - md/raid5: fix a race condition in stripe batch     (linux-stable).

  - mmc: sdhci-xenon: add set_power callback (bsc#1057035).

  - mmc: sdhci-xenon: Fix the work flow in xenon_remove()     (bsc#1057035).

  - mm/page_alloc.c: apply gfp_allowed_mask before the first     allocation attempt (bnc#971975 VM -- git fixes).

  - mm/vmalloc.c: huge-vmap: fail gracefully on unexpected     huge vmap mappings (bsc#1046529).

  - new helper: memdup_user_nul() (bsc#1048893).

  - nfs: flush data when locking a file to ensure cache     coherence for mmap (bsc#981309).

  - pci: rockchip: Handle regulator_get_current_limit()     failure correctly (bsc#1056849).

  - pci: rockchip: Use normal register bank for config     accessors (bsc#1056849).

  - pm / Domains: Fix unsafe iteration over modified list of     domains (bsc#1056849).

  - rtnetlink: fix rtnl_vfinfo_size (bsc#1056261).

  - scsi: hisi_sas: add missing break in switch statement     (bsc#1056849).

  - sysctl: fix lax sysctl_check_table() sanity check     (bsc#1048893).

  - sysctl: fold sysctl_writes_strict checks into helper     (bsc#1048893).

  - sysctl: kdoc'ify sysctl_writes_strict (bsc#1048893).

  - sysctl: simplify unsigned int support (bsc#1048893).

  - ubifs: Correctly evict xattr inodes (bsc#1012829).

  - ubifs: Do not leak kernel memory to the MTD     (bsc#1012829).

  - xfs: fix inobt inode allocation search optimization     (bsc#1012829).

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3444-2 advisory.

    USN-3444-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the     corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu     14.04 LTS.

    Jan H. Schnherr discovered that the Xen subsystem did not properly handle block IO merges correctly in     some situations. An attacker in a guest vm could use this to cause a denial of service (host crash) or     possibly gain administrative privileges in the host. (CVE-2017-12134)

    Andrey Konovalov discovered that a divide-by-zero error existed in the TCP stack implementation in the     Linux kernel. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2017-14106)

    Otto Ebeling discovered that the memory manager in the Linux kernel did not properly check the effective     UID in some situations. A local attacker could use this to expose sensitive information. (CVE-2017-14140)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the version of the vzkernel package and the readykernel-patch installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities :

  - The __ip6_append_data function in net/ipv6/ip6_output.c     in the Linux kernel through 4.11.3 is too late in     checking whether an overwrite of an skb data structure     may occur, which allows local users to cause a denial     of service (system crash) via crafted system calls.

  - A divide-by-zero vulnerability was found in the
    __tcp_select_window function in the Linux kernel. This     can result in a kernel panic causing a local     denial-of-service.

Note that Tenable Network Security has extracted the preceding description block directly from the Virtuozzo security advisory.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the parallels-server-bm-release / vzkernel / etc packages installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities :

  - An integer overflow vulnerability in     ip6_find_1stfragopt() function was found. A local     attacker that has privileges (of CAP_NET_RAW) to open     raw socket can cause an infinite loop inside the     ip6_find_1stfragopt() function.

  - Race condition in fs/timerfd.c in the Linux kernel     before 4.10.15 allows local users to gain privileges or     cause a denial of service (list corruption or     use-after-free) via simultaneous file-descriptor     operations that leverage improper might_cancel     queueing.

  - A race condition issue leading to a use-after-free flaw     was found in the way the raw packet sockets are     implemented in the Linux kernel networking subsystem     handling synchronization. A local user able to open a     raw packet socket (requires the CAP_NET_RAW capability)     could use this flaw to elevate their privileges on the     system.

  - Andrey Konovalov discovered a race condition in the UDP     Fragmentation Offload (UFO) code in the Linux kernel. A     local attacker could use this to cause a denial of     service or execute arbitrary code.

  - Kernel memory corruption due to a buffer overflow was     found in brcmf_cfg80211_mgmt_tx() function in Linux     kernels from v3.9-rc1 to v4.13-rc1. The vulnerability     can be triggered by sending a crafted NL80211_CMD_FRAME     packet via netlink. This flaw is unlikely to be     triggered remotely as certain userspace code is needed     for this. An unprivileged local user could use this     flaw to induce kernel memory corruption on the system,     leading to a crash. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out,     although we believe it is unlikely.

  - The mq_notify function in the Linux kernel through     4.11.9 does not set the sock pointer to NULL upon entry     into the retry logic. During a user-space close of a     Netlink socket, it allows attackers to possibly cause a     situation where a value may be used after being freed     (use after free) which may lead to memory corruption or     other unspecified other impact.

  - The tcp_disconnect function in net/ipv4/tcp.c in the     Linux kernel before 4.12 allows local users to cause a     denial of service (__tcp_select_window divide-by-zero     error and system crash) by triggering a disconnect     within a certain tcp_recvmsg code path.

Note that Tenable Network Security has extracted the preceding description block directly from the Virtuozzo security advisory.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several vulnerabilities have been discovered in the Linux kernel that may lead to privilege escalation, denial of service or information leaks.

  - CVE-2017-7518     Andy Lutomirski discovered that KVM is prone to an     incorrect debug exception (#DB) error occurring while     emulating a syscall instruction. A process inside a     guest can take advantage of this flaw for privilege     escalation inside a guest.

  - CVE-2017-7558 (stretch only)     Stefano Brivio of Red Hat discovered that the SCTP     subsystem is prone to a data leak vulnerability due to     an out-of-bounds read flaw, allowing to leak up to 100     uninitialized bytes to userspace.

  - CVE-2017-10661 (jessie only)     Dmitry Vyukov of Google reported that the timerfd     facility does not properly handle certain concurrent     operations on a single file descriptor. This allows a     local attacker to cause a denial of service or     potentially execute arbitrary code.

  - CVE-2017-11600     Bo Zhang reported that the xfrm subsystem does not     properly validate one of the parameters to a netlink     message. Local users with the CAP_NET_ADMIN capability     can use this to cause a denial of service or potentially     to execute arbitrary code.

  - CVE-2017-12134 / #866511 / XSA-229     Jan H. Schoenherr of Amazon discovered that when Linux     is running in a Xen PV domain on an x86 system, it may     incorrectly merge block I/O requests. A buggy or     malicious guest may trigger this bug in dom0 or a PV     driver domain, causing a denial of service or     potentially execution of arbitrary code.

  This issue can be mitigated by disabling merges on the underlying   back-end block devices, e.g.:echo 2 >   /sys/block/nvme0n1/queue/nomerges

  - CVE-2017-12146 (stretch only)     Adrian Salido of Google reported a race condition in     access to the'driver_override' attribute for platform     devices in sysfs. If unprivileged users are permitted to     access this attribute, this might allow them to gain     privileges.

  - CVE-2017-12153     Bo Zhang reported that the cfg80211 (wifi) subsystem     does not properly validate the parameters to a netlink     message. Local users with the CAP_NET_ADMIN capability     (in any user namespace with a wifi device) can use this     to cause a denial of service.

  - CVE-2017-12154     Jim Mattson of Google reported that the KVM     implementation for Intel x86 processors did not     correctly handle certain nested hypervisor     configurations. A malicious guest (or nested guest in a     suitable L1 hypervisor) could use this for denial of     service.

  - CVE-2017-14106     Andrey Konovalov discovered that a user-triggerable     division by zero in the tcp_disconnect() function could     result in local denial of service.

  - CVE-2017-14140     Otto Ebeling reported that the move_pages() system call     performed insufficient validation of the UIDs of the     calling and target processes, resulting in a partial     ASLR bypass. This made it easier for local users to     exploit vulnerabilities in programs installed with the     set-UID permission bit set.

  - CVE-2017-14156     'sohu0106' reported an information leak in the atyfb     video driver. A local user with access to a framebuffer     device handled by this driver could use this to obtain     sensitive information.

  - CVE-2017-14340     Richard Wareing discovered that the XFS implementation     allows the creation of files with the 'realtime' flag on     a filesystem with no realtime device, which can result     in a crash (oops). A local user with access to an XFS     filesystem that does not have a realtime device can use     this for denial of service.

  - CVE-2017-14489     ChunYu Wang of Red Hat discovered that the iSCSI     subsystem does not properly validate the length of a     netlink message, leading to memory corruption. A local     user with permission to manage iSCSI devices can use     this for denial of service or possibly to execute     arbitrary code.

  - CVE-2017-14497 (stretch only)     Benjamin Poirier of SUSE reported that vnet headers are     not properly handled within the tpacket_rcv() function     in the raw packet (af_packet) feature. A local user with     the CAP_NET_RAW capability can take advantage of this     flaw to cause a denial of service (buffer overflow, and     disk and memory corruption) or have other impact.

  - CVE-2017-1000111     Andrey Konovalov of Google reported a race condition in     the raw packet (af_packet) feature. Local users with the     CAP_NET_RAW capability can use this for denial of     service or possibly to execute arbitrary code.

  - CVE-2017-1000112     Andrey Konovalov of Google reported a race condition     flaw in the UDP Fragmentation Offload (UFO) code. A     local user can use this flaw for denial of service or     possibly to execute arbitrary code.

  - CVE-2017-1000251 / #875881     Armis Labs discovered that the Bluetooth subsystem does     not properly validate L2CAP configuration responses,     leading to a stack-based buffer overflow. This is one of     several vulnerabilities dubbed 'Blueborne'. A nearby     attacker can use this to cause a denial of service or     possibly to execute arbitrary code on a system with     Bluetooth enabled.

  - CVE-2017-1000252 (stretch only)     Jan H. Schoenherr of Amazon reported that the KVM     implementation for Intel x86 processors did not     correctly validate interrupt injection requests. A local     user with permission to use KVM could use this for     denial of service.

  - CVE-2017-1000370     The Qualys Research Labs reported that a large argument     or environment list can result in ASLR bypass for 32-bit     PIE binaries.

  - CVE-2017-1000371     The Qualys Research Labs reported that a large argument     or environment list can result in a stack/heap clash for     32-bit PIE binaries.

  - CVE-2017-1000380     Alexander Potapenko of Google reported a race condition     in the ALSA (sound) timer driver, leading to an     information leak. A local user with permission to access     sound devices could use this to obtain sensitive     information.

Debian disables unprivileged user namespaces by default, but if they are enabled (via the kernel.unprivileged_userns_clone sysctl) then CVE-2017-11600, CVE-2017-14497 and CVE-2017-1000111 can be exploited by any local user.

An update for kernel is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es) :

* Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. (CVE-2017-7184, Important)

* A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket (requires the CAP_NET_RAW capability) could use this flaw to elevate their privileges on the system.
(CVE-2017-1000111, Important)

* An exploitable memory corruption flaw was found in the Linux kernel.
The append path can be erroneously switched from UFO to non-UFO in ip_ufo_append_data() when building an UFO packet with MSG_MORE option.
If unprivileged user namespaces are available, this flaw can be exploited to gain root privileges. (CVE-2017-1000112, Important)

* A flaw was found in the Linux networking subsystem where a local attacker with CAP_NET_ADMIN capabilities could cause an out-of-bounds memory access by creating a smaller-than-expected ICMP header and sending to its destination via sendto(). (CVE-2016-8399, Moderate)

* Kernel memory corruption due to a buffer overflow was found in brcmf_cfg80211_mgmt_tx() function in Linux kernels from v3.9-rc1 to v4.13-rc1. The vulnerability can be triggered by sending a crafted NL80211_CMD_FRAME packet via netlink. This flaw is unlikely to be triggered remotely as certain userspace code is needed for this. An unprivileged local user could use this flaw to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely. (CVE-2017-7541, Moderate)

* An integer overflow vulnerability in ip6_find_1stfragopt() function was found. A local attacker that has privileges (of CAP_NET_RAW) to open raw socket can cause an infinite loop inside the ip6_find_1stfragopt() function. (CVE-2017-7542, Moderate)

* A kernel data leak due to an out-of-bound read was found in the Linux kernel in inet_diag_msg_sctp{,l}addr_fill() and sctp_get_sctp_info() functions present since version 4.7-rc1 through version 4.13. A data leak happens when these functions fill in sockaddr data structures used to export socket's diagnostic information. As a result, up to 100 bytes of the slab data could be leaked to a userspace. (CVE-2017-7558, Moderate)

* The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to possibly cause a situation where a value may be used after being freed (use-after-free) which may lead to memory corruption or other unspecified other impact. (CVE-2017-11176, Moderate)

* A divide-by-zero vulnerability was found in the __tcp_select_window function in the Linux kernel. This can result in a kernel panic causing a local denial of service. (CVE-2017-14106, Moderate)

Red Hat would like to thank Chaitin Security Research Lab for reporting CVE-2017-7184; Willem de Bruijn for reporting CVE-2017-1000111; and Andrey Konovalov for reporting CVE-2017-1000112.
The CVE-2017-7558 issue was discovered by Stefano Brivio (Red Hat).

Space precludes documenting all of the bug fixes and enhancements included in this advisory. To see the complete list of bug fixes and enhancements, refer to the following KnowledgeBase article:
https://access.redhat.com/node/3212921.

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:2172 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * An industry-wide issue was found in the way many modern microprocessor designs have implemented     speculative execution of Load & Store instructions (a commonly used performance optimization). It relies     on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact     that memory read from address to which a recent memory write has occurred may see an older value and     subsequently cause an update into the microprocessor's data cache even for speculatively executed     instructions that never actually commit (retire). As a result, an unprivileged attacker could use this     flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639)

    * kernel: A divide-by-zero vulnerability was found in the __tcp_select_window function in the Linux     kernel. This can result in a kernel panic causing a local denial of service. (CVE-2017-14106)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

    Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project     Zero) for reporting CVE-2018-3639.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名前	製品	ファミリー	公開日	更新日	深刻度
105575	SUSE SLES11 Security Update : kernel (SUSE-SU-2018:0011-1) (Meltdown) (Spectre)	Nessus	SuSE Local Security Checks	2018/1/4	2026/1/14	high
127425	NewStart CGSL MAIN 4.05 : kernel Multiple Vulnerabilities (NS-SA-2019-0152)	Nessus	NewStart CGSL Local Security Checks	2019/8/12	2022/12/6	high
127146	NewStart CGSL MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0004)	Nessus	NewStart CGSL Local Security Checks	2019/8/12	2022/5/19	high
103288	openSUSE Security Update : the Linux Kernel (openSUSE-2017-1063) (BlueBorne)	Nessus	SuSE Local Security Checks	2017/9/18	2025/11/20	high
103779	Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3444-2)	Nessus	Ubuntu Local Security Checks	2017/10/11	2024/8/27	high
102979	Virtuozzo 7 : readykernel-patch (VZA-2017-077)	Nessus	Virtuozzo Local Security Checks	2017/9/7	2025/11/24	medium
102922	Virtuozzo 6 : parallels-server-bm-release / vzkernel / etc (VZA-2017-076)	Nessus	Virtuozzo Local Security Checks	2017/9/5	2025/11/24	high
103365	Debian DSA-3981-1 : linux - security update (BlueBorne) (Stack Clash)	Nessus	Debian Local Security Checks	2017/9/21	2025/11/20	high
104106	CentOS 7 : kernel (CESA-2017:2930)	Nessus	CentOS Local Security Checks	2017/10/24	2025/11/17	high
210301	RHEL 5 : kernel (RHSA-2018:2172)	Nessus	Red Hat Local Security Checks	2024/11/5	2026/1/9	medium

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