QID 355143

Date Published: 2023-05-29

QID 355143: Amazon Linux Security Advisory for kernel : ALAS2023-2023-160

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) a null pointer dereference has been discovered in the linux kernel, in io_file_bitmap_get in io_uring/filetable.c. (
( CVE-2023-1583)



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 Medium - 5.5 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2023-2023-160 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 355143

    CVE-2023-1583 | CVE-2022-4269 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2023-2023-160 amazon linux 2023 URL Logo alas.aws.amazon.com/AL2023/ALAS-2023-160.html
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