SB20260727198 - Race condition in Linux kernel proc

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Main Vulnerability Database SB20260727198

SB20260727198 - Race condition in Linux kernel proc

Published: July 27, 2026

Security Bulletin ID SB20260727198
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2026-64375)

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

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to a race condition in proc_pid_get_link() and proc_pid_readlink() when handling access to /proc pid link targets. A local user can trigger concurrent task state changes to disclose sensitive information.

The issue affects file descriptor-related proc links and involves ptrace_may_access() checks performed on a different task lookup than the one used for the actual access.


Remediation

Install update from vendor's website.

References