SB20260527104 - Race condition in Linux kernel mm
Published: May 27, 2026
Security Bulletin ID
SB20260527104
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Race condition (CVE-ID: CVE-2026-46093)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a race condition in decay_va_pool_node() when the shrinker path runs concurrently with vmap area purging. A local user can trigger concurrent shrinker and purge activity to cause a denial of service.
The issue can also result in possible memory leaks.
Remediation
Install update from vendor's website.