CVE-2026-31473

UNKNOWN 0.0

media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

In the Linux kernel, the following vulnerability has been resolved: media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex MEDIA_REQUEST_IOC_REINIT can run concurrently with VIDIOC_REQBUFS(0) queue teardown paths. This can race request object cleanup against vb2 queue cancellation and lead to use-after-free reports. We already serialize request queueing against STREAMON/OFF with req_queue_mutex. Extend that serialization to REQBUFS, and also take the same mutex in media_request_ioctl_reinit() so REINIT is in the same exclusion domain. This keeps request cleanup and queue cancellation from running in parallel for request-capable devices.

Vendor	linux
Product	linux
Ecosystems	Linux Kernel
Industries	Technology
Published	Apr 22, 2026

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Affected Versions

Linux / Linux

6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < 331242998a7ade5c2f65e14988901614629f3db5 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < 2c685e99efb3b3bd2b78699fba6b1cf321975db0 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < 585fd9a2063dacce8b2820f675ef23d5d17434c5 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < 1a0d9083c24fbd5d22f7100f09d11e4d696a5f01 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < d8549a453d5bdc0a71de66ad47a1106703406a56 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < 72b9e81e0203f03c40f3adb457f55bd4c8eb112d 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < cf2023e84f0888f96f4b65dc0804e7f3651969c1 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < bef4f4a88b73e4cc550d25f665b8a9952af22773

Linux / Linux

4.20

References

NVD ↗ CVE.org ↗ EPSS Data ↗