Use After Free Affecting kernel-rt-debuginfo-common-x86_64 package, versions <0:4.18.0-477.21.1.rt7.284.el8_8


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELRTDEBUGINFOCOMMONX8664-5964977
  • published7 Oct 2023
  • disclosed12 Apr 2023

Introduced: 12 Apr 2023

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

How to fix?

Upgrade Rocky-Linux:8 kernel-rt-debuginfo-common-x86_64 to version 0:4.18.0-477.21.1.rt7.284.el8_8 or higher.
This issue was patched in RLSA-2023:4541.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debuginfo-common-x86_64 package and not the kernel-rt-debuginfo-common-x86_64 package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 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.

CVSS Scores

version 3.1