NULL pointer dereference in Linux kernel - CVE-2026-43189
Published: May 7, 2026
Vulnerability identifier: #VU130549
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-2026-43189
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 the v4l2 asynchronous sub-device matching logic when handling error paths after finding a matching fwnode. A local user can trigger a failure during sub-device registration or notification handling to cause a denial of service.
How to mitigate CVE-2026-43189
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/2de0a3c8148fc3dbea21981e6569f550b3626119
- https://git.kernel.org/stable/c/30aaed311f973f13ba13a0cd2dc0202f595fff48
- https://git.kernel.org/stable/c/461733d83e67ba7e3a5b750c0d203f738e01244f
- https://git.kernel.org/stable/c/7345d6d356336c448d6b9230ed8704f39679fd12
- https://git.kernel.org/stable/c/b02bcb378efa8af07827f49b3afcc5e825318c55