NULL pointer dereference in Linux kernel - CVE-2026-53334
Published: July 2, 2026
Vulnerability identifier: #VU136716
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53334
CWE-ID: CWE-476
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 a NULL pointer dereference in damon_reclaim_enabled_store() in mm/damon/reclaim.c when handling DAMON_RECLAIM enablement after damon_ctx allocation failure. A local user can trigger the vulnerable code path to cause a denial of service.
The issue occurs only if allocation of the damon_ctx object fails before the affected code path is reached.
How to mitigate CVE-2026-53334
Install security update from vendor's repository.