{"api_version":"1","generated_at":"2026-04-23T04:10:06+00:00","cve":"CVE-2026-31473","urls":{"html":"https://cve.report/CVE-2026-31473","api":"https://cve.report/api/cve/CVE-2026-31473.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-31473","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-31473"},"summary":{"title":"media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-04-22 14:16:43","updated_at":"2026-04-22 14:16:43"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5","name":"https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56","name":"https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5","name":"https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0","name":"https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01","name":"https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112d","name":"https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773","name":"https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1","name":"https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-31473","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31473","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 331242998a7ade5c2f65e14988901614629f3db5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 2c685e99efb3b3bd2b78699fba6b1cf321975db0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 585fd9a2063dacce8b2820f675ef23d5d17434c5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 1a0d9083c24fbd5d22f7100f09d11e4d696a5f01 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.203 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.168 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.131 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.80 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.21 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.11 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/media/mc/mc-request.c","drivers/media/v4l2-core/v4l2-ioctl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"331242998a7ade5c2f65e14988901614629f3db5","status":"affected","version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","versionType":"git"},{"lessThan":"2c685e99efb3b3bd2b78699fba6b1cf321975db0","status":"affected","version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","versionType":"git"},{"lessThan":"585fd9a2063dacce8b2820f675ef23d5d17434c5","status":"affected","version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","versionType":"git"},{"lessThan":"1a0d9083c24fbd5d22f7100f09d11e4d696a5f01","status":"affected","version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","versionType":"git"},{"lessThan":"d8549a453d5bdc0a71de66ad47a1106703406a56","status":"affected","version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","versionType":"git"},{"lessThan":"72b9e81e0203f03c40f3adb457f55bd4c8eb112d","status":"affected","version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","versionType":"git"},{"lessThan":"cf2023e84f0888f96f4b65dc0804e7f3651969c1","status":"affected","version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","versionType":"git"},{"lessThan":"bef4f4a88b73e4cc550d25f665b8a9952af22773","status":"affected","version":"6093d3002eabd7c2913d97f1d1f4ce34b072acf9","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/media/mc/mc-request.c","drivers/media/v4l2-core/v4l2-ioctl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.20"},{"lessThan":"4.20","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.168","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.131","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.80","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.253","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.203","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.168","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.131","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.80","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.21","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.11","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"4.20","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-04-22T13:54:00.970Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-31473","datePublished":"2026-04-22T13:54:00.970Z","dateReserved":"2026-03-09T15:48:24.098Z","dateUpdated":"2026-04-22T13:54:00.970Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-22 14:16:43","lastModifiedDate":"2026-04-22 14:16:43","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"31473","Ordinal":"1","Title":"media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mut","CVE":"CVE-2026-31473","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"31473","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mut"}]}}}