QID 354883

Date Published: 2023-04-19

QID 354883: Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.15-2023-016

A flaw was found in the linux kernel traffic control (tc) subsystem.
Using a specific networking configuration (redirecting egress packets to ingress using tc action "mirred") a local unprivileged user could trigger a cpu soft lockup (abba deadlock) when the transport protocol in use (tcp or sctp) does a retransmission, resulting in a denial of service condition. (
( CVE-2022-4269) reserved note: https://www.openwall.com/lists/oss-security/2022/12/14/3 note: https://lore.kernel.org/all/[email protected]/ (cve-2022-4379) 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 - 7.5 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2KERNEL-5.15-2023-016 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 354883

    CVE-2023-28466 | CVE-2022-4379 | CVE-2022-4269 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2KERNEL-5.15-2023-016 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALASKERNEL-5.15-2023-016.html
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