The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2017-5715: Systems with microprocessors utilizing     speculative execution and indirect branch prediction may     allow unauthorized disclosure of information to an     attacker with local user access via a side-channel     analysis (bnc#1068032). Enhancements and bugfixes over     the previous fixes have been added to this kernel.

  - CVE-2018-10087: The kernel_wait4 function in     kernel/exit.c might have allowed local users to cause a     denial of service by triggering an attempted use of the
    -INT_MIN value (bnc#1089608).

  - CVE-2018-7757: Memory leak in the sas_smp_get_phy_events     function in drivers/scsi/libsas/sas_expander.c allowed     local users to cause a denial of service (memory     consumption) via many read accesses to files in the     /sys/class/sas_phy directory, as demonstrated by the     /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file     (bnc#1084536).

  - CVE-2018-7566: There was a buffer overflow via an     SNDRV_SEQ_IOCTL_SET_CLIENT_POOL ioctl write operation to     /dev/snd/seq by a local user (bnc#1083483).

  - CVE-2017-0861: Use-after-free vulnerability in the     snd_pcm_info function in the ALSA subsystem allowed     attackers to gain privileges via unspecified vectors     (bnc#1088260).

  - CVE-2018-8822: Incorrect buffer length handling in the     ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c     could be exploited by malicious NCPFS servers to crash     the kernel or execute code (bnc#1086162).

  - CVE-2017-13166: An elevation of privilege vulnerability     in the kernel v4l2 video driver. (bnc#1072865).

  - CVE-2017-18203: The dm_get_from_kobject function in     drivers/md/dm.c allowed local users to cause a denial of     service (BUG) by leveraging a race condition with
    __dm_destroy during creation and removal of DM devices     (bnc#1083242).

  - CVE-2017-16911: The vhci_hcd driver allowed allows local     attackers to disclose kernel memory addresses.
    Successful exploitation requires that a USB device is     attached over IP (bnc#1078674).

  - CVE-2017-18208: The madvise_willneed function in     mm/madvise.c local users to cause a denial of service     (infinite loop) by triggering use of MADVISE_WILLNEED     for a DAX mapping (bnc#1083494).

  - CVE-2017-16644: The hdpvr_probe function in     drivers/media/usb/hdpvr/hdpvr-core.c allowed local users     to cause a denial of service (improper error handling     and system crash) or possibly have unspecified other     impact via a crafted USB device (bnc#1067118).

  - CVE-2018-6927: The futex_requeue function in     kernel/futex.c in the Linux kernel might allow attackers     to cause a denial of service (integer overflow) or     possibly have unspecified other impact by triggering a     negative wake or requeue value (bnc#1080757).

  - CVE-2017-16914: The 'stub_send_ret_submit()' function     (drivers/usb/usbip/stub_tx.c) allowed attackers to cause     a denial of service (NULL pointer dereference) via a     specially crafted USB over IP packet (bnc#1078669).

  - CVE-2016-7915: The hid_input_field function in     drivers/hid/hid-core.c allowed physically proximate     attackers to obtain sensitive information from kernel     memory or cause a denial of service (out-of-bounds read)     by connecting a device, as demonstrated by a Logitech DJ     receiver (bnc#1010470).

  - CVE-2015-5156: The virtnet_probe function in     drivers/net/virtio_net.c attempted to support a FRAGLIST     feature without proper memory allocation, which allowed     guest OS users to cause a denial of service (buffer     overflow and memory corruption) via a crafted sequence     of fragmented packets (bnc#940776).

  - CVE-2017-12190: The bio_map_user_iov and bio_unmap_user     functions in block/bio.c did unbalanced refcounting when     a SCSI I/O vector has small consecutive buffers     belonging to the same page. The bio_add_pc_page function     merges them into one, but the page reference is never     dropped. This causes a memory leak and possible system     lockup (exploitable against the host OS by a guest OS     user, if a SCSI disk is passed through to a virtual     machine) due to an out-of-memory condition     (bnc#1062568).

  - CVE-2017-16912: The 'get_pipe()' function     (drivers/usb/usbip/stub_rx.c) allowed attackers to cause     a denial of service (out-of-bounds read) via a specially     crafted USB over IP packet (bnc#1078673).

  - CVE-2017-16913: The 'stub_recv_cmd_submit()' function     (drivers/usb/usbip/stub_rx.c) when handling CMD_SUBMIT     packets allowed attackers to cause a denial of service     (arbitrary memory allocation) via a specially crafted     USB over IP packet (bnc#1078672).

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 Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-4265 advisory.

    - scsi: libsas: fix memory leak in sas_smp_get_phy_events() (Jason Yan)  [Orabug: 27927687]     {CVE-2018-7757}

Tenable has extracted the preceding description block directly from the Oracle 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.

The SUSE Linux Enterprise 12 SP3 Azure kernel was updated to 4.4.162 to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2018-18281: The mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. (bnc#1113769).

CVE-2018-18710: An information leak in cdrom_ioctl_select_disc in drivers/cdrom/cdrom.c could be used by local attackers to read kernel memory because a cast from unsigned long to int interferes with bounds checking. This is similar to CVE-2018-10940 and CVE-2018-16658 (bnc#1113751).

CVE-2018-18690: A local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error condition during an xfs attribute change, because xfs_attr_shortform_addname in fs/xfs/libxfs/xfs_attr.c mishandled ATTR_REPLACE operations with conversion of an attr from short to long form (bnc#1105025).

CVE-2018-18386: drivers/tty/n_tty.c allowed local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ (bnc#1094825).

CVE-2018-9516: In hid_debug_events_read of drivers/hid/hid-debug.c, there is a possible out of bounds write due to a missing bounds check.
This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
(bnc#1108498).

CVE-2018-14633: A security flaw was found in the chap_server_compute_md5() function in the ISCSI target code in a way an authentication request from an ISCSI initiator is processed. An unauthenticated remote attacker can cause a stack-based buffer overflow and smash up to 17 bytes of the stack. The attack requires the iSCSI target to be enabled on the victim host. Depending on how the target's code was built (i.e. depending on a compiler, compile flags and hardware architecture) an attack may lead to a system crash and thus to a denial-of-service or possibly to a non-authorized access to data exported by an iSCSI target. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is highly unlikely. (bnc#1107829).

CVE-2018-17182: The vmacache_flush_all function in mm/vmacache.c mishandled sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations (bnc#1108399).

CVE-2018-16597: Incorrect access checking in overlayfs mounts could be used by local attackers to modify or truncate files in the underlying filesystem (bnc#1106512).

CVE-2018-14613: There is an invalid pointer dereference in io_ctl_map_page() when mounting and operating a crafted btrfs image, because of a lack of block group item validation in check_leaf_item in fs/btrfs/tree-checker.c (bnc#1102896).

CVE-2018-14617: There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory (bnc#1102870).

CVE-2018-16276: Local attackers could use user access read/writes with incorrect bounds checking in the yurex USB driver to crash the kernel or potentially escalate privileges (bnc#1106095 bnc#1115593).

CVE-2018-7757: Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c allowed local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file (bnc#1087209).

CVE-2018-7480: The blkcg_init_queue function in block/blk-cgroup.c allowed local users to cause a denial of service (double free) or possibly have unspecified other impact by triggering a creation failure (bnc#1082863).

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.

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the Linux kernel's client-side     implementation of the cifs protocol. This flaw allows     an attacker controlling the server to kernel panic a     client which has the CIFS server     mounted.(CVE-2018-1066)

  - In the Linux Kernel before version 4.15.8, 4.14.25,     4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the     '_sctp_make_chunk()' function     (net/sctp/sm_make_chunk.c) when handling SCTP packets     length can be exploited to cause a kernel     crash.(CVE-2018-5803)

  - Memory leak in the sas_smp_get_phy_events function in     drivers/scsi/libsas/sas_expander.c in the Linux kernel     allows local users to cause a denial of service (kernel     memory exhaustion) via multiple read accesses to files     in the /sys/class/sas_phy directory.(CVE-2018-7757)

  - A race condition in the store_int_with_restart()     function in arch/x86/kernel/cpu/mcheck/mce.c in the     Linux kernel allows local users to cause a denial of     service (panic) by leveraging root access to write to     the check_interval file in a     /sys/devices/system/machinecheck/machinecheck (cpu     number) directory.(CVE-2018-7995)

  - 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)

  - A flaw was found in the Linux kernel's implementation     of 32-bit syscall interface for bridging. This allowed     a privileged user to arbitrarily write to a limited     range of kernel memory.(CVE-2018-1068)

  - A vulnerability was found in the Linux kernel's     kernel/events/core.c:perf_cpu_time_max_percent_handler(     ) function. Local privileged users could exploit this     flaw to cause a denial of service due to integer     overflow or possibly have unspecified other     impact.(CVE-2017-18255)

  - The code in the drivers/scsi/libsas/sas_scsi_host.c     file in the Linux kernel allow a physically proximate     attacker to cause a memory leak in the ATA command     queue and, thus, denial of service by triggering     certain failure conditions.(CVE-2018-10021)

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

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3654-1 advisory.

    Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read     may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A     local attacker could use this to expose sensitive information, including kernel memory. (CVE-2018-3639)

    Tuba Yavuz discovered that a double-free error existed in the USBTV007 driver of the Linux kernel. A local     attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2017-17975)

    It was discovered that a race condition existed in the F2FS implementation in the Linux kernel. A local     attacker could use this to cause a denial of service (system crash). (CVE-2017-18193)

    It was discovered that a buffer overflow existed in the Hisilicon HNS Ethernet Device driver in the Linux     kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute     arbitrary code. (CVE-2017-18222)

    It was discovered that the netfilter subsystem in the Linux kernel did not validate that rules containing     jumps contained user-defined chains. A local attacker could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2018-1065)

    It was discovered that the netfilter subsystem of the Linux kernel did not properly validate ebtables     offsets. A local attacker could use this to cause a denial of service (system crash) or possibly execute     arbitrary code. (CVE-2018-1068)

    It was discovered that a null pointer dereference vulnerability existed in the DCCP protocol     implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system     crash). (CVE-2018-1130)

    It was discovered that the SCTP Protocol implementation in the Linux kernel did not properly validate     userspace provided payload lengths in some situations. A local attacker could use this to cause a denial     of service (system crash). (CVE-2018-5803)

    It was discovered that a double free error existed in the block layer subsystem of the Linux kernel when     setting up a request queue. A local attacker could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2018-7480)

    It was discovered that a memory leak existed in the SAS driver subsystem of the Linux kernel. A local     attacker could use this to cause a denial of service (memory exhaustion). (CVE-2018-7757)

    It was discovered that a race condition existed in the x86 machine check handler in the Linux kernel. A     local privileged attacker could use this to cause a denial of service (system crash) or possibly execute     arbitrary code. (CVE-2018-7995)

    Eyal Itkin discovered that the USB displaylink video adapter driver in the Linux kernel did not properly     validate mmap offsets sent from userspace. A local attacker could use this to expose sensitive information     (kernel memory) or possibly execute arbitrary code. (CVE-2018-8781)

    Silvio Cesare discovered a buffer overwrite existed in the NCPFS implementation in the Linux kernel. A     remote attacker controlling a malicious NCPFS server could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2018-8822)

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.

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4316 advisory.

    - Copy secure_boot flag in boot params across kexec reboot (Dave Young)  [Orabug: 22066352]     {CVE-2015-7837}
    - ipv6: tcp: add rcu locking in tcp_v6_send_synack() (Eric Dumazet)  [Orabug: 25059183]  {CVE-2016-3841}
    - ipv6: add complete rcu protection around np->opt (Eric Dumazet)  [Orabug: 25059183]  {CVE-2016-3841}
    - scsi: qla2xxx: Fix an integer overflow in sysfs code (Dan Carpenter)  [Orabug: 28220420]     {CVE-2017-14051}
    - ext4: fail ext4_iget for root directory if unallocated (Theodore Ts'o)  [Orabug: 28220433]     {CVE-2018-1092} {CVE-2018-1092}
    - ALSA: seq: Fix regression by incorrect ioctl_mutex usages (Takashi Iwai)  [Orabug: 29005190]     {CVE-2018-1000004}
    - netfilter: xt_osf: Add missing permission checks (Kevin Cernekee)  [Orabug: 29037832]  {CVE-2017-17450}
    - wil6210: missing length check in wmi_set_ie (Lior David)  [Orabug: 29060697]  {CVE-2018-5848}
    - HID: debug: check length before copy_to_user() (Daniel Rosenberg)  [Orabug: 29128167]  {CVE-2018-9516}
    - x86/MCE: Serialize sysfs changes (Seunghun Han)  [Orabug: 29152249]  {CVE-2018-7995}

Tenable has extracted the preceding description block directly from the Oracle 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.

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

  - CVE-2015-9016     Ming Lei reported a race condition in the multiqueue     block layer (blk-mq). On a system with a driver using     blk-mq (mtip32xx, null_blk, or virtio_blk), a local user     might be able to use this for denial of service or     possibly for privilege escalation.

  - CVE-2017-0861     Robb Glasser reported a potential use-after-free in the     ALSA (sound) PCM core. We believe this was not possible     in practice.

  - CVE-2017-5715     Multiple researchers have discovered a vulnerability in     various processors supporting speculative execution,     enabling an attacker controlling an unprivileged process     to read memory from arbitrary addresses, including from     the kernel and all other processes running on the     system.

  This specific attack has been named Spectre variant 2 (branch target   injection) and is mitigated for the x86 architecture (amd64 and   i386) by using the 'retpoline' compiler feature which allows   indirect branches to be isolated from speculative execution.

  - CVE-2017-5753     Multiple researchers have discovered a vulnerability in     various processors supporting speculative execution,     enabling an attacker controlling an unprivileged process     to read memory from arbitrary addresses, including from     the kernel and all other processes running on the     system.

  This specific attack has been named Spectre variant 1 (bounds-check   bypass) and is mitigated by identifying vulnerable code sections   (array bounds checking followed by array access) and replacing the   array access with the speculation-safe array_index_nospec()   function.

  More use sites will be added over time.

  - CVE-2017-13166     A bug in the 32-bit compatibility layer of the v4l2     ioctl handling code has been found. Memory protections     ensuring user-provided buffers always point to userland     memory were disabled, allowing destination addresses to     be in kernel space. On a 64-bit kernel a local user with     access to a suitable video device can exploit this to     overwrite kernel memory, leading to privilege     escalation.

  - CVE-2017-13220     Al Viro reported that the Bluetooth HIDP implementation     could dereference a pointer before performing the     necessary type check. A local user could use this to     cause a denial of service.

  - CVE-2017-16526     Andrey Konovalov reported that the UWB subsystem may     dereference an invalid pointer in an error case. A local     user might be able to use this for denial of service.

  - CVE-2017-16911     Secunia Research reported that the USB/IP vhci_hcd     driver exposed kernel heap addresses to local users.
    This information could aid the exploitation of other     vulnerabilities.

  - CVE-2017-16912     Secunia Research reported that the USB/IP stub driver     failed to perform a range check on a received packet     header field, leading to an out-of-bounds read. A remote     user able to connect to the USB/IP server could use this     for denial of service.

  - CVE-2017-16913     Secunia Research reported that the USB/IP stub driver     failed to perform a range check on a received packet     header field, leading to excessive memory allocation. A     remote user able to connect to the USB/IP server could     use this for denial of service.

  - CVE-2017-16914     Secunia Research reported that the USB/IP stub driver     failed to check for an invalid combination of fields in     a received packet, leading to a NULL pointer     dereference. A remote user able to connect to the USB/IP     server could use this for denial of service.

  - CVE-2017-18017     Denys Fedoryshchenko reported that the netfilter     xt_TCPMSS module failed to validate TCP header lengths,     potentially leading to a use-after-free. If this module     is loaded, it could be used by a remote attacker for     denial of service or possibly for code execution.

  - CVE-2017-18203     Hou Tao reported that there was a race condition in     creation and deletion of device-mapper (DM) devices. A     local user could potentially use this for denial of     service.

  - CVE-2017-18216     Alex Chen reported that the OCFS2 filesystem failed to     hold a necessary lock during nodemanager sysfs file     operations, potentially leading to a NULL pointer     dereference. A local user could use this for denial of     service.

  - CVE-2017-18232     Jason Yan reported a race condition in the SAS     (Serial-Attached SCSI) subsystem, between probing and     destroying a port. This could lead to a deadlock. A     physically present attacker could use this to cause a     denial of service.

  - CVE-2017-18241     Yunlei He reported that the f2fs implementation does not     properly initialise its state if the 'noflush_merge'     mount option is used. A local user with access to a     filesystem mounted with this option could use this to     cause a denial of service.

  - CVE-2018-1066     Dan Aloni reported to Red Hat that the CIFS client     implementation would dereference a NULL pointer if the     server sent an invalid response during NTLMSSP setup     negotiation. This could be used by a malicious server     for denial of service.

  - CVE-2018-1068     The syzkaller tool found that the 32-bit compatibility     layer of ebtables did not sufficiently validate offset     values. On a 64-bit kernel, a local user with the     CAP_NET_ADMIN capability (in any user namespace) could     use this to overwrite kernel memory, possibly leading to     privilege escalation. Debian disables unprivileged user     namespaces by default.

  - CVE-2018-1092     Wen Xu reported that a crafted ext4 filesystem image     would trigger a null dereference when mounted. A local     user able to mount arbitrary filesystems could use this     for denial of service.

  - CVE-2018-5332     Mohamed Ghannam reported that the RDS protocol did not     sufficiently validate RDMA requests, leading to an     out-of-bounds write. A local attacker on a system with     the rds module loaded could use this for denial of     service or possibly for privilege escalation.

  - CVE-2018-5333     Mohamed Ghannam reported that the RDS protocol did not     properly handle an error case, leading to a NULL pointer     dereference. A local attacker on a system with the rds     module loaded could possibly use this for denial of     service.

  - CVE-2018-5750     Wang Qize reported that the ACPI sbshc driver logged a     kernel heap address. This information could aid the     exploitation of other vulnerabilities.

  - CVE-2018-5803     Alexey Kodanev reported that the SCTP protocol did not     range-check the length of chunks to be created. A local     or remote user could use this to cause a denial of     service.

  - CVE-2018-6927     Li Jinyue reported that the FUTEX_REQUEUE operation on     futexes did not check for negative parameter values,     which might lead to a denial of service or other     security impact.

  - CVE-2018-7492     The syzkaller tool found that the RDS protocol was     lacking a null pointer check. A local attacker on a     system with the rds module loaded could use this for     denial of service.

  - CVE-2018-7566     Fan LongFei reported a race condition in the ALSA     (sound) sequencer core, between write and ioctl     operations. This could lead to an out-of-bounds access     or use-after-free. A local user with access to a     sequencer device could use this for denial of service or     possibly for privilege escalation.

  - CVE-2018-7740     Nic Losby reported that the hugetlbfs filesystem's mmap     operation did not properly range-check the file offset.
    A local user with access to files on a hugetlbfs     filesystem could use this to cause a denial of service.

  - CVE-2018-7757     Jason Yan reported a memory leak in the SAS     (Serial-Attached SCSI) subsystem. A local user on a     system with SAS devices could use this to cause a denial     of service.

  - CVE-2018-7995     Seunghun Han reported a race condition in the x86 MCE     (Machine Check Exception) driver. This is unlikely to     have any security impact.

  - CVE-2018-8781     Eyal Itkin reported that the udl (DisplayLink) driver's     mmap operation did not properly range-check the file     offset. A local user with access to a udl framebuffer     device could exploit this to overwrite kernel memory,     leading to privilege escalation.

  - CVE-2018-8822     Dr Silvio Cesare of InfoSect reported that the ncpfs     client implementation did not validate reply lengths     from the server. An ncpfs server could use this to cause     a denial of service or remote code execution in the     client.

  - CVE-2018-1000004     Luo Quan reported a race condition in the ALSA (sound)     sequencer core, between multiple ioctl operations. This     could lead to a deadlock or use-after-free. A local user     with access to a sequencer device could use this for     denial of service or possibly for privilege escalation.

  - CVE-2018-1000199     Andy Lutomirski discovered that the ptrace subsystem did     not sufficiently validate hardware breakpoint settings.
    Local users can use this to cause a denial of service,     or possibly for privilege escalation, on x86 (amd64 and     i386) and possibly other architectures.

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

CVE-2017-0861

Robb Glasser reported a potential use-after-free in the ALSA (sound) PCM core. We believe this was not possible in practice.

CVE-2017-5715

Multiple researchers have discovered a vulnerability in various processors supporting speculative execution, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system.

This specific attack has been named Spectre variant 2 (branch target injection) and is mitigated for the x86 architecture (amd64 and i386) by using the 'retpoline' compiler feature which allows indirect branches to be isolated from speculative execution.

CVE-2017-13166

A bug in the 32-bit compatibility layer of the v4l2 ioctl handling code has been found. Memory protections ensuring user-provided buffers always point to userland memory were disabled, allowing destination addresses to be in kernel space. On a 64-bit kernel (amd64 flavour) a local user with access to a suitable video device can exploit this to overwrite kernel memory, leading to privilege escalation.

CVE-2017-16526

Andrey Konovalov reported that the UWB subsystem may dereference an invalid pointer in an error case. A local user might be able to use this for denial of service.

CVE-2017-16911

Secunia Research reported that the USB/IP vhci_hcd driver exposed kernel heap addresses to local users. This information could aid the exploitation of other vulnerabilities.

CVE-2017-16912

Secunia Research reported that the USB/IP stub driver failed to perform a range check on a received packet header field, leading to an out-of-bounds read. A remote user able to connect to the USB/IP server could use this for denial of service.

CVE-2017-16913

Secunia Research reported that the USB/IP stub driver failed to perform a range check on a received packet header field, leading to excessive memory allocation. A remote user able to connect to the USB/IP server could use this for denial of service.

CVE-2017-16914

Secunia Research reported that the USB/IP stub driver failed to check for an invalid combination of fields in a received packet, leading to a NULL pointer dereference. A remote user able to connect to the USB/IP server could use this for denial of service.

CVE-2017-18017

Denys Fedoryshchenko reported that the netfilter xt_TCPMSS module failed to validate TCP header lengths, potentially leading to a use-after-free. If this module is loaded, it could be used by a remote attacker for denial of service or possibly for code execution.

CVE-2017-18203

Hou Tao reported that there was a race condition in creation and deletion of device-mapper (DM) devices. A local user could potentially use this for denial of service.

CVE-2017-18216

Alex Chen reported that the OCFS2 filesystem failed to hold a necessary lock during nodemanager sysfs file operations, potentially leading to a NULL pointer dereference. A local user could use this for denial of service.

CVE-2018-1068

The syzkaller tool found that the 32-bit compatibility layer of ebtables did not sufficiently validate offset values. On a 64-bit kernel (amd64 flavour), a local user with the CAP_NET_ADMIN capability could use this to overwrite kernel memory, possibly leading to privilege escalation.

CVE-2018-1092

Wen Xu reported that a crafted ext4 filesystem image would trigger a null dereference when mounted. A local user able to mount arbitrary filesystems could use this for denial of service.

CVE-2018-5332

Mohamed Ghannam reported that the RDS protocol did not sufficiently validate RDMA requests, leading to an out-of-bounds write. A local attacker on a system with the rds module loaded could use this for denial of service or possibly for privilege escalation.

CVE-2018-5333

Mohamed Ghannam reported that the RDS protocol did not properly handle an error case, leading to a NULL pointer dereference. A local attacker on a system with the rds module loaded could possibly use this for denial of service.

CVE-2018-5750

Wang Qize reported that the ACPI sbshc driver logged a kernel heap address. This information could aid the exploitation of other vulnerabilities.

CVE-2018-5803

Alexey Kodanev reported that the SCTP protocol did not range-check the length of chunks to be created. A local or remote user could use this to cause a denial of service.

CVE-2018-6927

Li Jinyue reported that the FUTEX_REQUEUE operation on futexes did not check for negative parameter values, which might lead to a denial of service or other security impact.

CVE-2018-7492

The syzkaller tool found that the RDS protocol was lacking a NULL pointer check. A local attacker on a system with the rds module loaded could use this for denial of service.

CVE-2018-7566

&#x8303;&#x9F99;&#x98DE; (Fan LongFei) reported a race condition in the ALSA (sound) sequencer core, between write and ioctl operations.
This could lead to an out-of-bounds access or use-after-free. A local user with access to a sequencer device could use this for denial of service or possibly for privilege escalation.

CVE-2018-7740

Nic Losby reported that the hugetlbfs filesystem's mmap operation did not properly range-check the file offset. A local user with access to files on a hugetlbfs filesystem could use this to cause a denial of service.

CVE-2018-7757

Jason Yan reported a memory leak in the SAS (Serial-Attached SCSI) subsystem. A local user on a system with SAS devices could use this to cause a denial of service.

CVE-2018-7995

Seunghun Han reported a race condition in the x86 MCE (Machine Check Exception) driver. This is unlikely to have any security impact.

CVE-2018-8781

Eyal Itkin reported that the udl (DisplayLink) driver's mmap operation did not properly range-check the file offset. A local user with access to a udl framebuffer device could exploit this to overwrite kernel memory, leading to privilege escalation.

CVE-2018-8822

Dr Silvio Cesare of InfoSect reported that the ncpfs client implementation did not validate reply lengths from the server. An ncpfs server could use this to cause a denial of service or remote code execution in the client.

CVE-2018-1000004

Luo Quan reported a race condition in the ALSA (sound) sequencer core, between multiple ioctl operations. This could lead to a deadlock or use-after-free. A local user with access to a sequencer device could use this for denial of service or possibly for privilege escalation.

CVE-2018-1000199

Andy Lutomirski discovered that the ptrace subsystem did not sufficiently validate hardware breakpoint settings. Local users can use this to cause a denial of service, or possibly for privilege escalation, on x86 (amd64 and i386) and possibly other architectures.

Additionally, some mitigations for CVE-2017-5753 are included in this release :

CVE-2017-5753

Multiple researchers have discovered a vulnerability in various processors supporting speculative execution, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system.

This specific attack has been named Spectre variant 1 (bounds-check bypass) and is mitigated by identifying vulnerable code sections (array bounds checking followed by array access) and replacing the array access with the speculation-safe array_index_nospec() function.

More use sites will be added over time.

For Debian 7 'Wheezy', these problems have been fixed in version 3.2.101-1. This version also includes bug fixes from upstream versions up to and including 3.2.101. It also fixes a regression in the procfs hidepid option in the previous version (Debian bug #887106).

We recommend that you upgrade your linux packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA 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 kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the way the Linux kernel's perf     subsystem retrieved userlevel stack traces on PowerPC     systems. A local, unprivileged user could use this flaw     to cause a denial of service on the system by creating     a special stack layout that would force the     perf_callchain_user_64() function into an infinite     loop.(CVE-2015-6526i1/4%0

  - A vulnerability was found in the Linux kernel. Payloads     of NM entries are not supposed to contain NUL. When     such entry is processed, only the part prior to the     first NUL goes into the concatenation (i.e. the     directory entry name being encoded by a bunch of NM     entries). The process stops when the amount collected     so far + the claimed amount in the current NM entry     exceed 254. However, the value returned as the total     length is the sum of *claimed* sizes, not the actual     amount collected. And that's what will be passed to     readdir() callback as the name length - 8Kb
    __copy_to_user() from a buffer allocated by
    __get_free_page().(CVE-2016-4913i1/4%0

  - The perf_trace_event_perm function in     kernel/trace/trace_event_perf.c in the Linux kernel     before 3.12.2 does not properly restrict access to the     perf subsystem, which allows local users to enable     function tracing via a crafted     application.(CVE-2013-2930i1/4%0

  - The mincore() implementation in mm/mincore.c in the     Linux kernel through 4.19.13 allowed local attackers to     observe page cache access patterns of other processes     on the same system, potentially allowing sniffing of     secret information. (Fixing this affects the output of     the fincore program.) Limited remote exploitation may     be possible, as demonstrated by latency differences in     accessing public files from an Apache HTTP     Server.(CVE-2019-5489i1/4%0

  - It was found that the espfix functionality could be     bypassed by installing a 16-bit RW data segment into     GDT instead of LDT (which espfix checks), and using     that segment on the stack. A local, unprivileged user     could potentially use this flaw to leak kernel stack     addresses.(CVE-2014-8133i1/4%0

  - An issue was discovered in the btrfs filesystem code in     the Linux kernel. An out-of-bounds access is possible     in write_extent_buffer() when mounting and operating a     crafted btrfs image due to a lack of verification at     mount time within the btrfs_read_block_groups() in     fs/btrfs/extent-tree.c function. This could lead to a     system crash and a denial of service.(CVE-2018-14610i1/4%0

  - kernel/bpf/verifier.c in the Linux kernel through     4.14.8 mishandles states_equal comparisons between the     pointer data type and the UNKNOWN_VALUE data type,     which allows local users to obtain potentially     sensitive address information, aka a 'pointer     leak.'(CVE-2017-17864i1/4%0

  - drivers/hid/hid-lenovo-tpkbd.c in the Human Interface     Device (HID) subsystem in the Linux kernel through     3.11, when CONFIG_HID_LENOVO_TPKBD is enabled, allows     physically proximate attackers to cause a denial of     service (heap-based out-of-bounds write) via a crafted     device.(CVE-2013-2894i1/4%0

  - Memory leak in the sas_smp_get_phy_events function in     drivers/scsi/libsas/sas_expander.c in the Linux kernel     allows local users to cause a denial of service (kernel     memory exhaustion) via multiple read accesses to files     in the /sys/class/sas_phy directory.(CVE-2018-7757i1/4%0

  - 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-2017-6001i1/4%0

  - In the Linux kernel before 4.20.12,     net/ipv4/netfilter/nf_nat_snmp_basic_main.c in the SNMP     NAT module has insufficient ASN.1 length checks (aka an     array index error), making out-of-bounds read and write     operations possible, leading to an OOPS or local     privilege escalation. This affects snmp_version and     snmp_helper.(CVE-2019-9162i1/4%0

  - An information leak flaw was found in the way the Linux     kernel's Advanced Linux Sound Architecture (ALSA)     implementation handled access of the user control's     state. A local, privileged user could use this flaw to     leak kernel memory to user space.(CVE-2014-4652i1/4%0

  - A flaw was found that the vfs_rename() function did not     detect hard links on overlayfs. A local, unprivileged     user could use the rename syscall on overlayfs on top     of xfs to crash the system.(CVE-2016-6198i1/4%0

  - 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-2016-7097i1/4%0

  - A flaw was found in the way the Linux kernel's Crypto     subsystem handled automatic loading of kernel modules.
    A local user could use this flaw to load any installed     kernel module, and thus increase the attack surface of     the running kernel.(CVE-2014-9644i1/4%0

  - An arbitrary memory r/w access issue was found in the     Linux kernel compiled with the eBPF bpf(2) system call     (CONFIG_BPF_SYSCALL) support. The issue could occur due     to calculation errors in the eBPF verifier module,     triggered by user supplied malicious BPF program. An     unprivileged user could use this flaw to escalate their     privileges on a system. Setting parameter     'kernel.unprivileged_bpf_disabled=1' prevents such     privilege escalation by restricting access to bpf(2)     call.(CVE-2017-16995i1/4%0

  - A flaw was found in the implementation of associative     arrays where the add_key systemcall and KEYCTL_UPDATE     operations allowed for a NULL payload with a nonzero     length. When accessing the payload within this length     parameters value, an unprivileged user could trivially     cause a NULL pointer dereference (kernel     oops).(CVE-2017-15274i1/4%0

  - A flaw was found in the Linux kernel's keyring handling     code: the key_reject_and_link() function could be     forced to free an arbitrary memory block. An attacker     could use this flaw to trigger a use-after-free     condition on the system, potentially allowing for     privilege escalation.(CVE-2016-4470i1/4%0

  - A flaw was found in the way certain interfaces of the     Linux kernel's Infiniband subsystem used write() as     bi-directional ioctl() replacement, which could lead to     insufficient memory security checks when being invoked     using the splice() system call. A local unprivileged     user on a system with either Infiniband hardware     present or RDMA Userspace Connection Manager Access     module explicitly loaded, could use this flaw to     escalate their privileges on the     system.(CVE-2016-4565i1/4%0

  - It was found that the Linux kernel's IPv6 network stack     did not properly validate the value of the MTU variable     when it was set. A remote attacker could potentially     use this flaw to disrupt a target system's networking     (packet loss) by setting an invalid MTU value, for     example, via a NetworkManager daemon that is processing     router advertisement packets running on the target     system.(CVE-2015-8215i1/4%0

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

ID	名前	製品	ファミリー	公開日	更新日	深刻度
109360	SUSE SLES11 Security Update : kernel (SUSE-SU-2018:1080-1) (Spectre)	Nessus	SuSE Local Security Checks	2018/4/26	2024/10/24	high
118814	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4265)	Nessus	Oracle Linux Local Security Checks	2018/11/8	2024/10/22	high
121208	SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0095-1)	Nessus	SuSE Local Security Checks	2019/1/16	2022/5/24	high
117569	EulerOS Virtualization 2.5.0 : kernel (EulerOS-SA-2018-1260)	Nessus	Huawei Local Security Checks	2018/9/18	2024/8/6	high
110048	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3654-1)	Nessus	Ubuntu Local Security Checks	2018/5/23	2024/8/27	high
120977	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2019-4316)	Nessus	Oracle Linux Local Security Checks	2019/1/7	2024/10/23	critical
109517	Debian DSA-4187-1 : linux - security update (Spectre)	Nessus	Debian Local Security Checks	2018/5/2	2024/10/15	critical
109531	Debian DLA-1369-1 : linux security update (Spectre)	Nessus	Debian Local Security Checks	2018/5/3	2025/3/19	critical
124985	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1532)	Nessus	Huawei Local Security Checks	2019/5/14	2022/5/20	high

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