Out-of-bounds Write Affecting kernel-debug package, versions <0:4.18.0-372.93.1.el8_6


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELDEBUG-6259518
  • published21 Feb 2024
  • disclosed8 Jul 2022

Introduced: 8 Jul 2022

CVE-2021-33655  (opens in a new tab)
CWE-787  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:8 kernel-debug to version 0:4.18.0-372.93.1.el8_6 or higher.
This issue was patched in RHSA-2024:0930.

NVD Description

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

When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

CVSS Scores

version 3.1