NULL pointer dereference in Linux kernel - CVE-2026-93236
Published: September 25, 2026
Vulnerability identifier: #VU152160
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-93236
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in vdec_try_fmt_common() when processing a VIDIOC_TRY_FMT request with an unsupported pixel format on the OUTPUT queue. A local user can submit a crafted VIDIOC_TRY_FMT request to cause a denial of service.
The issue occurs when MPEG2 support has been locally removed and is absent from the platform format table.
Affected software
Linux kernel
How to mitigate CVE-2026-93236
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/20aa934ace6917262ff579a73ec018d06a7bad1c
- https://git.kernel.org/stable/c/276f28672bb6d5d5feca78db4219c7b5adf1be26
- https://git.kernel.org/stable/c/3839b6be2279fc4f558723f2c0fbfc9c42070958
- https://git.kernel.org/stable/c/680a89683197cdfe4e03e6fd7755454c647d39c1
- https://git.kernel.org/stable/c/96dafbae77f50bfe2228bcfedcd8652c5e5f08e8
- https://git.kernel.org/stable/c/c620906fb1b2ad75d408ea9d06040d66952d4a31
- https://git.kernel.org/stable/c/d61ba609c3226af3c84268ba606ea06ee63e511b
- https://git.kernel.org/stable/c/f2375a308640e401c142c5426d52c3d10e016d25