{"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": "2026-04-22T13:54:00.970Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-22T13:54:00.970Z"}, "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."}], "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": 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"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"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-31473", "lastModified": "2026-04-23T16:17:41.280", "metrics": {}, "published": "2026-04-22T14:16:43.863", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6093d3002eabd7c2913d97f1d1f4ce34b072acf9,331242998a7ade5c2f65e14988901614629f3db5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6093d3002eabd7c2913d97f1d1f4ce34b072acf9,2c685e99efb3b3bd2b78699fba6b1cf321975db0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6093d3002eabd7c2913d97f1d1f4ce34b072acf9,585fd9a2063dacce8b2820f675ef23d5d17434c5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6093d3002eabd7c2913d97f1d1f4ce34b072acf9,1a0d9083c24fbd5d22f7100f09d11e4d696a5f01)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6093d3002eabd7c2913d97f1d1f4ce34b072acf9,d8549a453d5bdc0a71de66ad47a1106703406a56)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6093d3002eabd7c2913d97f1d1f4ce34b072acf9,72b9e81e0203f03c40f3adb457f55bd4c8eb112d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6093d3002eabd7c2913d97f1d1f4ce34b072acf9,cf2023e84f0888f96f4b65dc0804e7f3651969c1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6093d3002eabd7c2913d97f1d2f4ce34b072acf9,bef4f4a88b73e4cc550d25f665b8a9952af22773)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.20"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.20)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.253,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.203,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.168,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.131,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.80,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.21,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.11,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-04-22T16:45:21.250760+00:00", "updated": "2026-04-22T16:45:21.250830+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}