Memory Leak Affecting kernel-tools-libs package, versions <0:4.18.0-553.el8_10


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (13th percentile)

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  • Snyk IDSNYK-CENTOS8-KERNELTOOLSLIBS-6389279
  • published5 Mar 2024
  • disclosed2 Mar 2024

Introduced: 2 Mar 2024

CVE-2023-52581  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Centos:8 kernel-tools-libs to version 0:4.18.0-553.el8_10 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-libs package and not the kernel-tools-libs package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: fix memleak when more than 255 elements expired

When more than 255 elements expired we're supposed to switch to a new gc container structure.

This never happens: u8 type will wrap before reaching the boundary and nft_trans_gc_space() always returns true.

This means we recycle the initial gc container structure and lose track of the elements that came before.

While at it, don't deref 'gc' after we've passed it to call_rcu.

CVSS Scores

version 3.1