CVE-2026-31473media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 before 331242998a7ade5c2f65e14988901614629f3db5; 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 builds before 2c685e99efb3b3bd2b78699fba6b1cf321975db0; 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 builds before 585fd9a2063dacce8b2820f675ef23d5d17434c5; 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 builds before 1a0d9083c24fbd5d22f7100f09d11e4d696a5f01; from 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 before d8549a453d5bdc0a71de66ad47a1106703406a56; 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 builds before 72b9e81e0203f03c40f3adb457f55bd4c8eb112d; from 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 before cf2023e84f0888f96f4b65dc0804e7f3651969c1; from 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 before bef4f4a88b73e4cc550d25f665b8a9952af22773 | CNA record |
linux linux_kernel linux:linux_kernel | from 4.20.1 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.168; from 6.2 before 6.6.131; from 6.7 before 6.12.80; from 6.13 before 6.18.21; from 6.19 before 6.19.11; 4.20; and 7 more ranges | NVD |
References
- https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5patch
- https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0patch
- https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5patch
- https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01patch
- https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56patch
- https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112dpatch
- https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1patch
- https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.