CVE-2026-31473High· 7.8▾ TwilightIn 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 …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
Last analysed / modified upstream
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.
Linux >= 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < 331242998a7ade5c2f65e14988901614629f3db5Linux >= 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < 2c685e99efb3b3bd2b78699fba6b1cf321975db0Linux >= 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < 585fd9a2063dacce8b2820f675ef23d5d17434c5Linux >= 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < 1a0d9083c24fbd5d22f7100f09d11e4d696a5f01Linux >= 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < d8549a453d5bdc0a71de66ad47a1106703406a56Linux >= 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < 72b9e81e0203f03c40f3adb457f55bd4c8eb112dLinux >= 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < cf2023e84f0888f96f4b65dc0804e7f3651969c1Linux >= 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 < bef4f4a88b73e4cc550d25f665b8a9952af22773Linux 4.20Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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