Buffer Overflow Affecting torvalds/linux package, versions [3.16,5.13.4)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
3.53% (87th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3004476
  • published26 Jan 2022
  • disclosed20 Jul 2021
  • creditUnknown

Introduced: 20 Jul 2021

CVE-2021-33909  (opens in a new tab)
CWE-120  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 5.13.4 or higher.

Overview

Affected versions of this package are vulnerable to Buffer Overflow fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

CVSS Base Scores

version 3.1