Use After Free Affecting kernel-rt-debug 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
0.04% (6th percentile)

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  • Snyk IDSNYK-ROCKY8-KERNELRTDEBUG-5964932
  • published7 Oct 2023
  • disclosed22 Mar 2023

Introduced: 22 Mar 2023

CVE-2023-1281  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 kernel-rt-debug 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-debug package and not the kernel-rt-debug package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root. This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.

CVSS Scores

version 3.1