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CVE-2026-89896

media: cedrus: fix memory leak in cedrus_init_ctrls()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
None on Exploit-DB, Metasploit or GitHub

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1 · fixed in 6fabacc3b79a528450aef4c32464da2ec681049e; From 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1 · fixed in 729a1ffab968b3c493f61d1cd683f5bafec500ea; From 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1 · fixed in ce5693b6e3a693fcdc3800af309363f6250104c8; From 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1 · fixed in 22441be29ec27c693f40c1ef499093275ef529d1; From 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1 · fixed in 79fd0b0161506fc9507bf7a6fe4c975a857a5be8; From 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1 · fixed in f78cf36cabf911da348ea80e4e9f430d74f6905c; From 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1 · fixed in 81aa608ac3a56cdd4aab0bd12442ed529a24ba31; From 50e761516f2b8c0cdeb31a8c6ca1b4ef98cd13f1 · fixed in 9df2fbe563194da1967a5db083442186c1323efe

  • Linux Linux

    4.20

  • KernelLinux

    From 4.20.0 · fixed in 5.10.270; From 5.11.0 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.51; From 6.19.0 · fixed in 7.2.5

References 8

git.kernel.org