Out-of-bounds Read Affecting kernel-uek-debug package, versions <0:2.6.39-400.330.1.el6uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-ORACLE6-KERNELUEKDEBUG-2597756
  • published10 Apr 2022
  • disclosed20 Nov 2020

Introduced: 20 Nov 2020

CVE-2020-28974  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Oracle:6 kernel-uek-debug to version 0:2.6.39-400.330.1.el6uek or higher.
This issue was patched in ELSA-2021-9043.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug package and not the kernel-uek-debug package as distributed by Oracle. See How to fix? for Oracle:6 relevant fixed versions and status.

A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height.

CVSS Scores

version 3.1