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CVE-2026-89896

Unknown

Last modified

CVE-2026-89896 is a vulnerability of currently unknown severity. 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.

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1, < 6fabacc3b79a528450aef4c32464da2ec681049e; >= 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1, < 729a1ffab968b3c493f61d1cd683f5bafec500ea; >= 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1, < ce5693b6e3a693fcdc3800af309363f6250104c8; >= 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1, < 22441be29ec27c693f40c1ef499093275ef529d1; >= 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1, < 79fd0b0161506fc9507bf7a6fe4c975a857a5be8; >= 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1, < f78cf36cabf911da348ea80e4e9f430d74f6905c; >= 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1, < 81aa608ac3a56cdd4aab0bd12442ed529a24ba31; >= 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1, < 9df2fbe563194da1967a5db083442186c1323efe
LinuxLinux4.20

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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.
How severe is CVE-2026-89896?
Severity scoring for CVE-2026-89896 is pending analysis.
How do I fix CVE-2026-89896?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST