Out-of-bounds Read Affecting torvalds/linux package, versions [,5.9.7)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3006655
  • published26 Jan 2022
  • disclosed20 Nov 2020
  • creditUnknown

Introduced: 20 Nov 2020

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

How to fix?

Upgrade torvalds/linux to version 5.9.7 or higher.

Overview

Affected versions of this package are vulnerable to Out-of-bounds Read. 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.

References

CVSS Scores

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