SB20260406112 - Memory leak in Linux kernel btrfs
Published: April 6, 2026
Security Bulletin ID
SB20260406112
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 security vulnerability.
1) Memory leak (CVE-ID: CVE-2026-23423)
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a memory leak in btrfs_uring_read_extent() when handling error conditions during encoded read processing. A local user can trigger an error path to cause a denial of service.
The issue occurs because the 'pages' allocation is not freed on certain non-happy-path execution paths.
Remediation
Install update from vendor's website.