SB20260925212 - Race condition in Linux kernel kasan

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Main Vulnerability Database SB20260925212

SB20260925212 - Race condition in Linux kernel kasan

Published: September 25, 2026

Security Bulletin ID SB20260925212
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2026-93208)

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:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to prevent slab caches from being released.

The vulnerability exists due to a race condition in KASAN quarantine cache removal when a CPU goes offline after per-CPU cache processing. A local user can trigger cache shrinking or destruction during CPU hotplug activity to prevent slab caches from being released.

Only kernels built with CONFIG_KASAN_GENERIC are affected.


Remediation

Install update from vendor's website.

References