Use After Free Affecting kernel-livepatch-5_14_21-150500_55_39-default package, versions <1-150500.11.3.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.24% (16th percentile)

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  • Snyk IDSNYK-SLES155-KERNELLIVEPATCH514211505005539DEFAULT-6127916
  • published15 Dec 2023
  • disclosed12 Dec 2023

Introduced: 12 Dec 2023

CVE-2023-4244  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 kernel-livepatch-5_14_21-150500_55_39-default to version 1-150500.11.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-5_14_21-150500_55_39-default package and not the kernel-livepatch-5_14_21-150500_55_39-default package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability.

We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.

CVSS Base Scores

version 3.1