Use After Free Affecting torvalds/linux package, versions [,6.5-rc3)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.02% (5th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-5885092
  • published7 Sept 2023
  • disclosed6 Sept 2023
  • creditUnknown

Introduced: 6 Sep 2023

CVE-2023-3777  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 6.5-rc3 or higher.

Overview

Affected versions of this package are vulnerable to Use After Free in the nf_tables component, which can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound, and the chain's owner rule can release the objects in certain circumstances.

CVSS Base Scores

version 3.1