SB2026081565 - Race condition in Linux kernel ipv6

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Main Vulnerability Database SB2026081565

SB2026081565 - Race condition in Linux kernel ipv6

Published: August 15, 2026

Security Bulletin ID SB2026081565
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) Race condition (CVE-ID: CVE-2026-74398)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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 attacker to cause a denial of service.

The vulnerability exists due to a race condition in addrconf_dad_failure in the IPv6 address configuration subsystem when handling duplicate address detection failure processing concurrently with IPv6 address deletion. A local attacker can trigger concurrent state transitions to cause a denial of service.

The issue can lead to a general protection fault when a deleted IPv6 address entry is processed a second time through scheduled DAD work.


Remediation

Install update from vendor's website.

References