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Red Hat: CVE-2023-1829: Use-after-free vulnerability in the Linux Kernel traffic control index filter (Multiple Advisories)

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Red Hat: CVE-2023-1829: Use-after-free vulnerability in the Linux Kernel traffic control index filter (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
04/12/2023
Created
08/10/2023
Added
08/09/2023
Modified
03/13/2024

Description

A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root. We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2023-1829
  • RHSA-2023:4517
  • RHSA-2023:4531
  • RHSA-2023:4541
  • RHSA-2023:4789
  • RHSA-2023:4888

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