Expired pointer dereference in Linux kernel - CVE-2026-43388
Published: May 8, 2026
Vulnerability identifier: #VU130789
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43388
CWE-ID: CWE-825
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 dangling pointer in damos_walk() when handling walk control for an inactive DAMON context. A local user can invoke the affected functionality on an inactive context to cause a denial of service.
The stale pointer can cause subsequent calls to fail with -EBUSY while the context remains turned off.
How to mitigate CVE-2026-43388
Install security update from vendor's repository.