Deadlock in Linux kernel - CVE-2026-31598
Published: April 25, 2026
Vulnerability identifier: #VU127803
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2026-31598
CWE-ID: CWE-833
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an inconsistent lock ordering that can lead to deadlock in ocfs2 unlink and direct I/O write completion handling when concurrent unlink and dio_end_io_write operations are performed. A local user can trigger concurrent file operations to cause a denial of service.
How to mitigate CVE-2026-31598
Install security update from vendor's repository.