SB20260816129 - Out-of-bounds write in Linux kernel netfilter

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260816129

SB20260816129 - Out-of-bounds write in Linux kernel netfilter

Published: August 16, 2026

Security Bulletin ID SB20260816129
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds write (CVE-ID: CVE-2026-72252)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause memory corruption.

The vulnerability exists due to out-of-bounds writes in the nft_pipapo_match handling in netfilter nft_set_pipapo when processing set element insertions after a prior memory allocation failure left a cloned match in an invalid state. A local user can trigger an allocation failure and then perform a subsequent insertion in the same batch to cause memory corruption.

The issue can also affect a subsequent transaction because a bad clone may persist when the abort callback is not executed after the initial failure.


Remediation

Install update from vendor's website.

References