SB20260815305 - Out-of-bounds read in Linux kernel netfilter

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Main Vulnerability Database SB20260815305

SB20260815305 - Out-of-bounds read in Linux kernel netfilter

Published: August 15, 2026

Security Bulletin ID SB20260815305
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 read (CVE-ID: CVE-2026-72419)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local privileged user to cause a denial of service.

The vulnerability exists due to an out-of-bounds read in nf_nat_register_fn in the netfilter nf_nat subsystem when handling netfilter netlink requests after nf_nat_init() has failed. A local privileged user can send a specially crafted netfilter request to cause a denial of service.

The issue can occur when nf_nat_core is built in and initialization has failed, leaving an invalid nat_net pointer state for dependent modules.


Remediation

Install update from vendor's website.

References