Privilege Defined With Unsafe Actions Affecting kernel-debug-modules package, versions <0:4.18.0-372.91.1.el8_6


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELDEBUGMODULES-6235734
  • published8 Feb 2024
  • disclosed24 May 2022

Introduced: 24 May 2022

CVE-2022-21499  (opens in a new tab)
CWE-267  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-debug-modules to version 0:4.18.0-372.91.1.el8_6 or higher.
This issue was patched in RHSA-2024:0724.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-modules package and not the kernel-debug-modules package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

CVSS Scores

version 3.1