The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9002 advisory.

    - mwifiex: fix possible heap overflow in mwifiex_process_country_ie() (Ganapathi Bhat)  [Orabug: 30781859]     {CVE-2019-14895} {CVE-2019-14895}
    - ext4: fix ext4_empty_dir() for directories with holes (Jan Kara)  [Orabug: 31265320]  {CVE-2019-19037}     {CVE-2019-19037}
    - netlabel: cope with NULL catmap (Paolo Abeni)  [Orabug: 31350493]  {CVE-2020-10711}
    - scsi: mptfusion: Fix double fetch bug in ioctl (Dan Carpenter)  [Orabug: 31350941]  {CVE-2020-12652}
    - scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo() (Dan Carpenter)  [Orabug: 31350941]     {CVE-2020-12652}
    - USB: core: Fix free-while-in-use bug in the USB S-Glibrary (Alan Stern)  [Orabug: 31350967]     {CVE-2020-12464}
    - drivers: usb: core: Minimize irq disabling in usb_sg_cancel() (David Mosberger)  [Orabug: 31350967]     {CVE-2020-12464}
    - drivers: usb: core: Don't disable irqs in usb_sg_wait() during URB submit. (David Mosberger)  [Orabug:
    31350967]  {CVE-2020-12464}
    - ext4: work around deleting a file with i_nlink == 0 safely (Theodore Ts'o)  [Orabug: 31351014]     {CVE-2019-19447}
    - sched/fair: Don't free p->numa_faults with concurrent readers (Jann Horn)  [Orabug: 32212524]     {CVE-2019-20934}
    - netfilter: nf_conntrack_h323: lost .data_len definition for Q.931/ipv6 (Vasily Averin)  [Orabug:
    32222844]  {CVE-2020-14305}
    - perf/core: Fix race in the perf_mmap_close() function (Jiri Olsa)  [Orabug: 32233360]  {CVE-2020-14351}
    - Fonts: Support FONT_EXTRA_WORDS macros for built-in fonts (Peilin Ye)  [Orabug: 32176264]     {CVE-2020-28915}
    - fbdev, newport_con: Move FONT_EXTRA_WORDS macros into linux/font.h (Peilin Ye)  [Orabug: 32176264]     {CVE-2020-28915}
    - vt: Disable KD_FONT_OP_COPY (Daniel Vetter)  [Orabug: 32187749]  {CVE-2020-28974}
    - block: Fix use-after-free in blkdev_get() (Jason Yan)  [Orabug: 32194609]  {CVE-2020-15436}
    - icmp: randomize the global rate limiter (Eric Dumazet)  [Orabug: 32227971]  {CVE-2020-25705}
    - tty: make FONTX ioctl use the tty pointer they were actually passed (Linus Torvalds)  [Orabug: 32122731]     {CVE-2020-25668}

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 version of kernel installed on the remote host is prior to 5.4.80-40.140. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2022-018 advisory.

    A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem     allowing a local attacker with permission to monitor perf events to corrupt memory and possibly escalate     privileges.  The highest threat from this vulnerability is to data confidentiality and integrity as well     as system availability. (CVE-2020-14351)

    A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was     using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of     bounds. The highest threat from this vulnerability is to data confidentiality. (CVE-2020-25656)

    A use-after-free flaw was found in the Linux kernel's TTY driver functionality in the way the user     triggers the con_font_op function. This flaw allows a local user to crash or escalate their privileges on     the system or expose sensitive information (kernel memory). (CVE-2020-25668)

    A memory leak flaw was found in the Linux kernel's performance monitoring subsystem when using     PERF_EVENT_IOC_SET_FILTER. This flaw allows a local user to starve the resources, causing a denial of     service. The highest threat from this vulnerability is to system availability. (CVE-2020-25704)

    An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users     can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.
    (CVE-2020-27673)

    An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x.
    drivers/xen/events/events_base.c allows event-channel removal during the event-handling loop (a race     condition). This can cause a use-after-free or NULL pointer dereference, as demonstrated by a dom0 crash     via events for an in-reconfiguration paravirtualized device, aka CID-073d0552ead5. (CVE-2020-27675)

    An out-of-bounds (OOB) SLAB memory access flaw was found in the Linux kernel's fbcon driver module. A     bounds check failure allows a local attacker with special user privileges to gain access to out-of-bounds     memory, leading to a system crash or leaking of internal kernel information. The highest threat from this     vulnerability is to system availability. (CVE-2020-28974)

Tenable has extracted the preceding description block directly from the tested product 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 versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - In create_pinctrl of core.c, there is a possible out of     bounds read due to a use after free. This could lead to     local information disclosure with no additional     execution privileges needed.(CVE-2020-0427)

  - NULL-ptr deref in the spk_ttyio_receive_buf2() function     in spk_ttyio.c.(CVE-2020-27830)

  - In do_epoll_ctl and ep_loop_check_proc of eventpoll.c,     there is a possible use after free due to a logic     error. This could lead to local escalation of privilege     with no additional execution privileges     needed.(CVE-2020-0466)

  - In the nl80211_policy policy of nl80211.c, there is a     possible out of bounds read due to a missing bounds     check. This could lead to local information disclosure     with System execution privileges     needed.(CVE-2020-27068)

  - use-after-free read in sunkbd_reinit in     drivers/input/keyboard/sunkbd.c.(CVE-2020-25669)

  - A flaw was found in the Linux kernels implementation of     MIDI, where an attacker with a local account and the     permissions to issue an ioctl commands to midi devices,     could trigger a use-after-free. A write to this     specific memory while freed and before use could cause     the flow of execution to change and possibly allow for     memory corruption or privilege     escalation.(CVE-2020-27786)

  - An issue was discovered in romfs_dev_read in     fs/romfs/storage.c in the Linux kernel before 5.8.4.
    Uninitialized memory leaks to userspace, aka     CID-bcf85fcedfdd.(CVE-2020-29371)

  - A slab-out-of-bounds read in fbcon in the Linux kernel     before 5.9.7 could be used by local attackers to read     privileged information or potentially crash the kernel,     aka CID-3c4e0dff2095. This occurs because     KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for     manipulations such as font height.(CVE-2020-28974)

  - A locking inconsistency issue was discovered in the tty     subsystem of the Linux kernel through 5.9.13.
    drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may     allow a read-after-free attack against TIOCGSID, aka     CID-c8bcd9c5be24.(CVE-2020-29660)

  - A locking issue was discovered in the tty subsystem of     the Linux kernel through 5.9.13.
    drivers/tty/tty_jobctrl.c allows a use-after-free     attack against TIOCSPGRP, aka     CID-54ffccbf053b.(CVE-2020-29661)

  - An issue was discovered in     drivers/accessibility/speakup/spk_ttyio.c in the Linux     kernel through 5.9.9. Local attackers on systems with     the speakup driver could cause a local denial of     service attack, aka CID-d41227544427. This occurs     because of an invalid free when the line discipline is     used more than once.(CVE-2020-28941)

  - A buffer over-read (at the framebuffer layer) in the     fbcon code in the Linux kernel before 5.8.15 could be     used by local attackers to read kernel memory, aka     CID-6735b4632def.(CVE-2020-28915)

  - A flaw in the way reply ICMP packets are limited in the     Linux kernel functionality was found that allows to     quickly scan open UDP ports. This flaw allows an     off-path remote user to effectively bypassing source     port UDP randomization. The highest threat from this     vulnerability is to confidentiality and possibly     integrity, because software that relies on UDP source     port randomization are indirectly affected as well.
    Kernel versions before 5.10 may be vulnerable to this     issue.(CVE-2020-25705)

  - race condition in fg_console can lead to use-after-free     in con_font_op.(CVE-2020-25668)

  - The Linux kernel before version 5.8 is vulnerable to a     NULL pointer dereference in     drivers/tty/serial/8250/8250_core.c:serial8250_isa_init
    _ports() that allows local users to cause a denial of     service by using the p->serial_in pointer which     uninitialized.(CVE-2020-15437)

  - An issue was discovered in the Linux kernel through     5.9.1, as used with Xen through 4.14.x. Guest OS users     can cause a denial of service (host OS hang) via a high     rate of events to dom0, aka     CID-e99502f76271.(CVE-2020-27673)

  - An issue was discovered in __split_huge_pmd in     mm/huge_memory.c in the Linux kernel before 5.7.5. The     copy-on-write implementation can grant unintended write     access because of a race condition in a THP mapcount     check, aka CID-c444eb564fb1.(CVE-2020-29368)

  - An issue was discovered in the Linux kernel through     5.9.1, as used with Xen through 4.14.x.
    drivers/xen/events/events_base.c allows event-channel     removal during the event-handling loop (a race     condition). This can cause a use-after-free or NULL     pointer dereference, as demonstrated by a dom0 crash     via events for an in-reconfiguration paravirtualized     device, aka CID-073d0552ead5.(CVE-2020-27675)

  - A flaw was found in the way RTAS handled memory     accesses in userspace to kernel communication. On a     locked down (usually due to Secure Boot) guest system     running on top of PowerVM or KVM hypervisors (pseries     platform) a root like local user could use this flaw to     further increase their privileges to that of a running     kernel.(CVE-2020-27777)

  - There is a memory leak in     perf_event_parse_addr_filter.(CVE-2020-25704)

  - Insufficient access control in the Linux kernel driver     for some Intel(R) Processors may allow an authenticated     user to potentially enable information disclosure via     local access.(CVE-2020-8694)

  - A flaw was found in the Linux kernel. A use-after-free     was found in the way the console subsystem was using     ioctls KDGKBSENT and KDSKBSENT. A local user could use     this flaw to get read memory access out of bounds. The     highest threat from this vulnerability is to data     confidentiality.(CVE-2020-25656)

  - In kbd_keycode of keyboard.c, there is a possible out     of bounds write due to a missing bounds check. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-144161459(CVE-2020-0431)

  - A flaw was found in the HDLC_PPP module of the Linux     kernel in versions before 5.9-rc7. Memory corruption     and a read overflow is caused by improper input     validation in the ppp_cp_parse_cr function which can     cause the system to crash or cause a denial of service.
    The highest threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-25643)

  - A flaw was found in the Linux kernel in versions before     5.9-rc7. Traffic between two Geneve endpoints may be     unencrypted when IPsec is configured to encrypt traffic     for the specific UDP port used by the GENEVE tunnel     allowing anyone between the two endpoints to read the     traffic unencrypted. The main threat from this     vulnerability is to data     confidentiality.(CVE-2020-25645)

  - An information leak flaw was found in the way the Linux     kernel's Bluetooth stack implementation handled     initialization of stack memory when handling certain     AMP packets. A remote attacker in adjacent range could     use this flaw to leak small portions of stack memory on     the system by sending a specially crafted AMP packets.
    The highest threat from this vulnerability is to data     confidentiality.(CVE-2020-12352)

  - A flaw was found in the way the Linux kernel Bluetooth     implementation handled L2CAP packets with A2MP CID. A     remote attacker in adjacent range could use this flaw     to crash the system causing denial of service or     potentially execute arbitrary code on the system by     sending a specially crafted L2CAP packet. The highest     threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-12351)

  - A missing CAP_NET_RAW check in NFC socket creation in     net/nfc/rawsock.c in the Linux kernel before 5.8.2     could be used by local attackers to create raw sockets,     bypassing security mechanisms, aka     CID-26896f01467a.(CVE-2020-26088)

  - A flaw was found in the Linux kernel's implementation     of biovecs in versions before 5.9-rc7. A zero-length     biovec request issued by the block subsystem could     cause the kernel to enter an infinite loop, causing a     denial of service. This flaw allows a local attacker     with basic privileges to issue requests to a block     device, resulting in a denial of service. The highest     threat from this vulnerability is to system     availability.(CVE-2020-25641)

  - In skb_to_mamac of networking.c, there is a possible     out of bounds write due to an integer overflow. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-143560807(CVE-2020-0432)

  - A TOCTOU mismatch in the NFS client code in the Linux     kernel before 5.8.3 could be used by local attackers to     corrupt memory or possibly have unspecified other     impact because a size check is in fs/ nfs/ nfs4proc.c     instead of fs/ nfs/ nfs4xdr.c, aka     CID-b4487b935452..(CVE-2020-25212)

  - A flaw was found in the Linux kernel before 5.9-rc4. A     failure of the file system metadata validator in XFS     can cause an inode with a valid, user-creatable     extended attribute to be flagged as corrupt. This can     lead to the filesystem being shutdown, or otherwise     rendered inaccessible until it is remounted, leading to     a denial of service. The highest threat from this     vulnerability is to system     availability.(CVE-2020-14385)

  - In uvc_scan_chain_forward of uvc_driver.c, there is a     possible linked list corruption due to an unusual root     cause. This could lead to local escalation of privilege     in the kernel with no additional execution privileges     needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android     kernelAndroid ID: A-111893654References: Upstream     kernel(CVE-2020-0404)

  - The rbd block device driver in drivers/block/rbd.c in     the Linux kernel through 5.8.9 used incomplete     permission checking for access to rbd devices, which     could be leveraged by local attackers to map or unmap     rbd block devices, aka     CID-f44d04e696fe.(CVE-2020-25284)

  - A race condition between hugetlb sysctl handlers in     mm/hugetlb.c in the Linux kernel before 5.8.8 could be     used by local attackers to corrupt memory, cause a NULL     pointer dereference, or possibly have unspecified other     impact, aka CID-17743798d812.(CVE-2020-25285)

  - A memory out-of-bounds read flaw was found in the Linux     kernel before 5.9-rc2 with the ext3/ext4 file system,     in the way it accesses a directory with broken     indexing. This flaw allows a local user to crash the     system if the directory exists. The highest threat from     this vulnerability is to system     availability.(CVE-2020-14314)

  - A flaw was found in the Linux kernel before 5.9-rc4.
    Memory corruption can be exploited to gain root     privileges from unprivileged processes. The highest     threat from this vulnerability is to data     confidentiality and integrity.(CVE-2020-14386)

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
144802	Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9002)	Nessus	Oracle Linux Local Security Checks	2021/1/7	2026/2/9	critical
160441	Amazon Linux 2 : kernel (ALASKERNEL-5.4-2022-018)	Nessus	Amazon Linux Local Security Checks	2022/5/2	2026/2/26	high
143398	openSUSE Security Update : the Linux Kernel (openSUSE-2020-2112)	Nessus	SuSE Local Security Checks	2020/12/1	2024/2/7	high
147690	EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1642)	Nessus	Huawei Local Security Checks	2021/3/11	2023/2/9	critical

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