QID 354904

Date Published: 2023-05-02

QID 354904: Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2023-044

A double-free flaw was found in the linux kernel’s tun/tap device driver functionality in how a user registers the device when the register_netdevice function fails (netdev_register notifier).
This flaw allows a local user to crash or potentially escalate their privileges on the system. (
( CVE-2022-4744) a use-after-free flaw was found in qdisc_graft in net/sched/sch_api.c in the linux kernel due to a race problem.
This flaw leads to a denial of service issue. (
( CVE-2023-0590) an out-of-bounds memory access flaw was found in the linux kernel's xfs file system in how a user restores an xfs image after failure (with a dirty log journal).
( CVE-2023-2124) do_tls_getsockopt in net/tls/tls_main.c in the linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resultant use-after-free or null pointer dereference). (
( CVE-2023-28466)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2KERNEL-5.4-2023-044 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 354904

    CVE-2023-2124 | CVE-2023-28466 | CVE-2023-0590 | CVE-2022-4744 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2KERNEL-5.4-2023-044 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2023-044.html
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