The version of kernel installed on the remote host is prior to 4.14.262-200.489. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2022-1749 advisory.

    2024-11-08: CVE-2021-47548 was added to this advisory.

    2024-08-01: CVE-2021-47576 was added to this advisory.

    2024-08-01: CVE-2021-47609 was added to this advisory.

    2024-08-01: CVE-2021-47603 was added to this advisory.

    2024-08-01: CVE-2021-47588 was added to this advisory.

    2024-08-01: CVE-2021-47600 was added to this advisory.

    2024-08-01: CVE-2021-47589 was added to this advisory.

    2024-08-01: CVE-2021-47606 was added to this advisory.

    2024-07-03: CVE-2021-47541 was added to this advisory.

    2024-04-24: CVE-2021-46929 was added to this advisory.

    2024-04-24: CVE-2021-46936 was added to this advisory.

    2023-10-12: CVE-2021-3923 was added to this advisory.

    A denial of service flaw for virtual machine guests in the Linux kernel's Xen hypervisor subsystem was     found in the way users call some interrupts with high frequency from one of the guests.A local user could     use this flaw to starve the resources resulting in a denial of service. (CVE-2021-28711)

    A denial of service flaw for virtual machine guests in the Linux kernel's Xen hypervisor subsystem was     found in the way users call some interrupts with high frequency from one of the guests.A local user could     use this flaw to starve the resources resulting in a denial of service. (CVE-2021-28712)

    A denial of service flaw for virtual machine guests in the Linux kernel's Xen hypervisor subsystem was     found in the way users call some interrupts with high frequency from one of the guests.A local user could     use this flaw to starve the resources resulting in a denial of service. (CVE-2021-28713)

    Incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is     ready to process them. There are some measures taken for avoiding to pile up too much data, but those can     be bypassed by the guest: The timeout could even never trigger if the guest manages to have only one free     slot in its RX queue ring page and the next package would require more than one free slot, which may be     the case when using GSO, XDP, or software hashing. (CVE-2021-28714)

    Incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is     ready to process them. There are some measures taken for avoiding to pile up too much data, but those can     be bypassed by the guest: There is a timeout how long the client side of an interface can stop consuming     new packets before it is assumed to have stalled, but this timeout is rather long (60 seconds by default).
    Using a UDP connection on a fast interface can easily accumulate gigabytes of data in that time.
    (CVE-2021-28715)

    A flaw was found in the Linux kernel's implementation of RDMA over infiniband. An attacker with a     privileged local account can leak kernel stack information when issuing commands to the     /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information, it     can be further used to defeat existing kernel protection mechanisms. (CVE-2021-3923)

    A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket     file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race     condition. This flaw allows a local user to crash the system or escalate their privileges on the system.
    (CVE-2021-4083)

    A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size     increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS     filesystem otherwise not accessible to them. (CVE-2021-4155)

    A use-after-free flaw in the Linux kernel TEE (Trusted Execution Environment) subsystem was found in the     way user calls ioctl TEE_IOC_OPEN_SESSION or TEE_IOC_INVOKE. A local user could use this flaw to crash the     system or escalate their privileges on the system. If the Linux system non configured with the     CONFIG_PREEMPT option or CONFIG_CPU_SW_DOMAIN_PAN option enabled, then it is unlikely that a user can     trigger this issue. (CVE-2021-44733)

    In the Linux kernel, the following vulnerability has been resolved:

    sctp: use call_rcu to free endpoint (CVE-2021-46929)

    In the Linux kernel, the following vulnerability has been resolved:

    net: fix use-after-free in tw_timer_handler (CVE-2021-46936)

    In the Linux kernel, the following vulnerability has been resolved:

    net/mlx4_en: Fix an use-after-free bug in mlx4_en_try_alloc_resources() (CVE-2021-47541)

    In the Linux kernel, the following vulnerability has been resolved:

    ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()     (CVE-2021-47548)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select() (CVE-2021-47576)

    In the Linux kernel, the following vulnerability has been resolved:

    sit: do not call ipip6_dev_free() from sit_init_net() (CVE-2021-47588)

    In the Linux kernel, the following vulnerability has been resolved:

    igbvf: fix double free in `igbvf_probe` (CVE-2021-47589)

    In the Linux kernel, the following vulnerability has been resolved:

    dm btree remove: fix use after free in rebalance_children() (CVE-2021-47600)

    In the Linux kernel, the following vulnerability has been resolved:

    audit: improve robustness of the audit queue handling (CVE-2021-47603)

    In the Linux kernel, the following vulnerability has been resolved:

    net: netlink: af_netlink: Prevent empty skb by adding a check on len. (CVE-2021-47606)

    In the Linux kernel, the following vulnerability has been resolved:

    firmware: arm_scpi: Fix string overflow in SCPI genpd driver (CVE-2021-47609)

    The cgroup release_agent is called with call_usermodehelper. The function call_usermodehelper starts the     release_agent with a full set of capabilities. Therefore require capabilities when setting the     release_agent. (CVE-2022-0492)

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.

Detections

Analytics

Amazon Linux 2 : kernel (ALAS-2022-1749)

high Nessus Plugin ID 157408

Version 1.15

Version 1.13

Version 1.11

Version 1.10

Version 1.9

Version 1.8

Version 1.7

Version 1.7

Version 1.15 Nov 12, 2024, 8:09 AM Exploit attributes ("Exploit framework metasploit" set to "True") Exploit attributes ("Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202411120809
Version 1.13 Jul 5, 2024, 2:41 PM CVE (set "CVE" coverage to "CVE-2021-4083,CVE-2021-4155,CVE-2021-28711,CVE-2021-28712,CVE-2021-28713,CVE-2021-28714,CVE-2021-28715,CVE-2021-3923,CVE-2021-44733,CVE-2021-46929,CVE-2021-46936,CVE-2021-47541,CVE-2022-0492") Detection (updated detection logic) Exploit attributes ("Exploit framework metasploit" set to "True". "Exploitability ease" changed from "Exploits are available" to "No known exploits are available". "Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin metadata Plugin Feed: 202407051441
Version 1.11 Apr 25, 2024, 1:31 PM Exploit attributes ("Exploit framework metasploit" set to "True") Exploit attributes ("Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202404251331
Version 1.10 Apr 25, 2024, 8:13 AM CVE (set "CVE" coverage to "CVE-2021-4083,CVE-2021-4155,CVE-2021-28711,CVE-2021-28712,CVE-2021-28713,CVE-2021-28714,CVE-2021-28715,CVE-2021-3923,CVE-2021-44733,CVE-2021-46929,CVE-2021-46936,CVE-2022-0492") Detection (updated detection logic) Exploit attributes ("Exploit framework metasploit" changed from "True" to none) Exploit attributes ("Exploitability ease" changed from "Exploits are available" to "No known exploits are available") Plugin metadata Plugin Feed: 202404250813
Version 1.9 Dec 7, 2023, 3:25 PM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:F/RL:OF/RC:C". "CVSSv3 temporal vector" set to "CVSS:3.0/E:F/RL:O/RC:C") Exploit attributes ("Exploit framework metasploit" set to "True") Plugin Feed: 202312071525
Version 1.8 Nov 17, 2023, 3:11 PM CVSSv2 score source (changed from "CVE-2021-4083" to "CVE-2022-0492") CVSSv3 score source (changed from "CVE-2022-0492" to none) Plugin Feed: 202311171511
Version 1.7 Oct 17, 2023, 6:13 AM CVE (set "CVE" coverage to "CVE-2021-4083,CVE-2021-4155,CVE-2021-28711,CVE-2021-28712,CVE-2021-28713,CVE-2021-28714,CVE-2021-28715,CVE-2021-3923,CVE-2021-44733,CVE-2022-0492") Detection Plugin metadata Plugin requirements Plugin Feed: 202310170613
Version 1.7 Nov 17, 2023, 12:59 PM CVSSv2 score source (changed from "CVE-2021-4083" to "CVE-2022-0492") CVSSv3 score source (changed from "CVE-2022-0492" to none) Plugin Feed: 202311171259