Out-of-bounds Write Affecting torvalds/linux package, versions [,6.6-rc1)


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-5892790
  • published12 Sept 2023
  • disclosed11 Sept 2023
  • creditZero Day Initiative

Introduced: 11 Sep 2023

CVE-2023-4881  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 6.6-rc1 or higher.

Overview

Affected versions of this package are vulnerable to Out-of-bounds Write in the netfilter subsystem. If the expression length is a multiple of 4 (register size), the nft_exthdr_eval family of functions writes 4 NULL bytes past the end of the regs argument, leading to stack corruption and potential information disclosure or a denial of service.

CVSS Base Scores

version 3.1