CVEvulnerability
CVE-2026-89896
- Status
- Received
- Published
- 2026-09-16
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
media: cedrus: fix memory leak in cedrus_init_ctrls()
In cedrus_init_ctrls(), the V4L2 control handler is initialized before
allocating memory for ctx->ctrls. If this allocation fails, the function
returns -ENOMEM without freeing the previously allocated handler
resources, leading to a memory leak.
Fix this by calling v4l2_ctrl_handler_free() on the ctx->ctrls allocation
failure path.
The bug was first flagged by an experimental analysis tool we are
developing for kernel memory-management bugs while analyzing
v6.13-rc1. The tool is still under development and is not yet publicly
available. Manual inspection confirms that the bug is still
present in v7.1.1.
An x86_64 allyesconfig build showed no new warnings. As we do not have an
Allwinner SoC or board with a Cedrus VPU available to test with, no
runtime testing was able to be performed.
References
- https://git.kernel.org/stable/c/22441be29ec27c693f40c1ef499093275ef529d1 git.kernel.org
- https://git.kernel.org/stable/c/6fabacc3b79a528450aef4c32464da2ec681049e git.kernel.org
- https://git.kernel.org/stable/c/729a1ffab968b3c493f61d1cd683f5bafec500ea git.kernel.org
- https://git.kernel.org/stable/c/79fd0b0161506fc9507bf7a6fe4c975a857a5be8 git.kernel.org
- https://git.kernel.org/stable/c/81aa608ac3a56cdd4aab0bd12442ed529a24ba31 git.kernel.org
- https://git.kernel.org/stable/c/9df2fbe563194da1967a5db083442186c1323efe git.kernel.org
- https://git.kernel.org/stable/c/ce5693b6e3a693fcdc3800af309363f6250104c8 git.kernel.org
- https://git.kernel.org/stable/c/f78cf36cabf911da348ea80e4e9f430d74f6905c git.kernel.org