Use After Free Affecting kernel-livepatch-5_14_21-150400_15_5-rt package, versions <10-150400.2.2


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
1.06% (63rd percentile)

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  • Snyk IDSNYK-SLES154-KERNELLIVEPATCH51421150400155RT-5920381
  • published27 Sept 2023
  • disclosed26 Sept 2023

Introduced: 26 Sep 2023

CVE-2023-1829  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 kernel-livepatch-5_14_21-150400_15_5-rt to version 10-150400.2.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-5_14_21-150400_15_5-rt package and not the kernel-livepatch-5_14_21-150400_15_5-rt package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

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 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ .

CVSS Base Scores

version 3.1