CVE-2026-89896

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.

CVSS

No CVSS.

References

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

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-16 11:16

Updated : 2026-09-16 11:16

NVD link : CVE-2026-89896

Mitre link : CVE-2026-89896

CVE.ORG link : CVE-2026-89896

JSON object : View

Products Affected

No product.

CWE

No CWE.

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If this allocation fails, the function\nreturns -ENOMEM without freeing the previously allocated handler\nresources, leading to a memory leak.\n\nFix this by calling v4l2_ctrl_handler_free() on the ctx->ctrls allocation\nfailure path.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1.1.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have an\nAllwinner SoC or board with a Cedrus VPU available to test with, no\nruntime testing was able to be performed."}], "lastModified": "2026-09-16T11:16:58.400", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}