CVE-2026-89896

Summary

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.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/6fabacc3b79a528450aef4c32464da2ec681049e
• https://git.kernel.org/stable/c/729a1ffab968b3c493f61d1cd683f5bafec500ea
• https://git.kernel.org/stable/c/ce5693b6e3a693fcdc3800af309363f6250104c8
• https://git.kernel.org/stable/c/22441be29ec27c693f40c1ef499093275ef529d1
• https://git.kernel.org/stable/c/79fd0b0161506fc9507bf7a6fe4c975a857a5be8
• https://git.kernel.org/stable/c/f78cf36cabf911da348ea80e4e9f430d74f6905c
• https://git.kernel.org/stable/c/81aa608ac3a56cdd4aab0bd12442ed529a24ba31
• https://git.kernel.org/stable/c/9df2fbe563194da1967a5db083442186c1323efe

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