QID 354060

Date Published: 2022-09-15

QID 354060: Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-035

An out-of-bounds read flaw was found in the linux kernel's teletype subsystem.
The issue occurs in how a user triggers a race condition using ioctls tiocsptlck and tiocgptpeer and tiocsti and tcxonc with leakage of memory in the flush_to_ldisc function.
This flaw allows a local user to crash the system or read unauthorized random data from memory. (
( CVE-2022-1462) a use-after-free flaw was found in nf_tables cross-table in the net/netfilter/nf_tables_api.c function in the linux kernel.
This flaw allows a local, privileged attacker to cause a use-after-free problem at the time of table deletion, possibly leading to local privilege escalation. (
( CVE-2022-2586) a use-after-free flaw was found in route4_change in the net/sched/cls_route.c filter implementation in the linux kernel.
This flaw allows a local user to crash the system and possibly lead to a local privilege escalation problem. (
( CVE-2022-2588)



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 - 6.3 severity.
  • CVSS V2 rated as Medium - 3.3 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2KERNEL-5.4-2022-035 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 354060

    CVE-2022-2588 | CVE-2022-2586 | CVE-2022-1462 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2KERNEL-5.4-2022-035 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-035.html
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