{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31473","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.098Z","datePublished":"2026-04-22T13:54:00.970Z","dateUpdated":"2026-05-11T22:09:24.920Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:09:24.920Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex\n\nMEDIA_REQUEST_IOC_REINIT can run concurrently with VIDIOC_REQBUFS(0)\nqueue teardown paths. This can race request object cleanup against vb2\nqueue cancellation and lead to use-after-free reports.\n\nWe already serialize request queueing against STREAMON/OFF with\nreq_queue_mutex. Extend that serialization to REQBUFS, and also take\nthe same mutex in media_request_ioctl_reinit() so REINIT is in the\nsame exclusion domain.\n\nThis keeps request cleanup and queue cancellation from running in\nparallel for request-capable devices."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/mc/mc-request.c","drivers/media/v4l2-core/v4l2-ioctl.c"],"versions":[{"version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","lessThan":"331242998a7ade5c2f65e14988901614629f3db5","status":"affected","versionType":"git"},{"version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","lessThan":"2c685e99efb3b3bd2b78699fba6b1cf321975db0","status":"affected","versionType":"git"},{"version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","lessThan":"585fd9a2063dacce8b2820f675ef23d5d17434c5","status":"affected","versionType":"git"},{"version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","lessThan":"1a0d9083c24fbd5d22f7100f09d11e4d696a5f01","status":"affected","versionType":"git"},{"version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","lessThan":"d8549a453d5bdc0a71de66ad47a1106703406a56","status":"affected","versionType":"git"},{"version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","lessThan":"72b9e81e0203f03c40f3adb457f55bd4c8eb112d","status":"affected","versionType":"git"},{"version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","lessThan":"cf2023e84f0888f96f4b65dc0804e7f3651969c1","status":"affected","versionType":"git"},{"version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","lessThan":"bef4f4a88b73e4cc550d25f665b8a9952af22773","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/mc/mc-request.c","drivers/media/v4l2-core/v4l2-ioctl.c"],"versions":[{"version":"4.20","status":"affected"},{"version":"0","lessThan":"4.20","status":"unaffected","versionType":"semver"},{"version":"5.10.253","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.203","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.168","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.131","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.80","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.21","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.11","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.1.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.6.131"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.12.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.18.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.19.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5"},{"url":"https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0"},{"url":"https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5"},{"url":"https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01"},{"url":"https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56"},{"url":"https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112d"},{"url":"https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1"},{"url":"https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773"}],"title":"media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex","x_generator":{"engine":"bippy-1.2.0"}}}}