Use After Free Affecting torvalds/linux package, versions [,6.5-rc4)


Severity

Recommended
0.0
critical
0
10

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

Threat Intelligence

EPSS
0.02% (3rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Use After Free vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-5885097
  • published7 Sept 2023
  • disclosed6 Sept 2023
  • creditUnknown

Introduced: 6 Sep 2023

CVE-2023-4015  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade torvalds/linux to version 6.5-rc4 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. On an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() function can unbind the chain and objects to be deactivated but used later.

CVSS Base Scores

version 3.1