{"id":"CVE-2026-72484","state":"PUBLISHED","title":"staging: most: video: avoid double free on video register failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: most: video: avoid double free on video register failure\n\ncomp_register_videodev() allocates a video_device with\nvideo_device_alloc() and releases it if video_register_device() fails.\n\nThis can double free the video_device when __video_register_device()\nreaches device_register() and that call fails:\n\n  video_register_device()\n    -> __video_register_device()\n       -> device_register() fails\n          -> put_device(&vdev->dev)\n             -> v4l2_device_release()\n                -> vdev->release(vdev)\n                   -> video_device_release(vdev)\n\n  comp_register_videodev()\n    -> video_device_release(mdev->vdev)\n\nUse video_device_release_empty() while registering the device so that\nregistration failure paths do not free mdev->vdev through vdev->release().\ncomp_register_videodev() then releases mdev->vdev exactly once on failure.\nRestore video_device_release() after successful registration so the\nregistered device keeps its normal lifetime handling.\n\nThis issue was found by a static analysis tool I am developing.","publishedAt":"2026-08-15T05:57:21.528Z","updatedAt":"2026-08-17T05:15:34.687Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"009d58b73500d0b49f6ae3833f8afcb0ebd9ddbb","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"430ad4ea06a0767fb44a08e2212ceb3a996607ee","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"46ea51f5b2ee1a3b40c05b7c750cbc5cabe94062","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"4928096212b78262dbbeab3b3abf2352278ce22d","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"80ed79787da3311f76b4d71d0ce7ab992a9e134d","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"43078449ad6236d839e4d707954d2e36b10a6706","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"7fc162453cfb7b8e93edb16287a84ba0130cac38","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"7cb1c5b32a2bfde961fff8d5204526b609bcb30a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/most/video/video.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/most/video/video.c"]}],"references":["https://git.kernel.org/stable/c/009d58b73500d0b49f6ae3833f8afcb0ebd9ddbb","https://git.kernel.org/stable/c/430ad4ea06a0767fb44a08e2212ceb3a996607ee","https://git.kernel.org/stable/c/46ea51f5b2ee1a3b40c05b7c750cbc5cabe94062","https://git.kernel.org/stable/c/4928096212b78262dbbeab3b3abf2352278ce22d","https://git.kernel.org/stable/c/80ed79787da3311f76b4d71d0ce7ab992a9e134d","https://git.kernel.org/stable/c/43078449ad6236d839e4d707954d2e36b10a6706","https://git.kernel.org/stable/c/7fc162453cfb7b8e93edb16287a84ba0130cac38","https://git.kernel.org/stable/c/7cb1c5b32a2bfde961fff8d5204526b609bcb30a"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72484.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72484","state":"PUBLISHED","datePublished":"2026-08-15T05:57:21.528Z","dateUpdated":"2026-08-17T05:15:34.687Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.935Z"},"containers":{"cna":{"title":"staging: most: video: avoid double free on video register failure","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: most: video: avoid double free on video register failure\n\ncomp_register_videodev() allocates a video_device with\nvideo_device_alloc() and releases it if video_register_device() fails.\n\nThis can double free the video_device when __video_register_device()\nreaches device_register() and that call fails:\n\n  video_register_device()\n    -> __video_register_device()\n       -> device_register() fails\n          -> put_device(&vdev->dev)\n             -> v4l2_device_release()\n                -> vdev->release(vdev)\n                   -> video_device_release(vdev)\n\n  comp_register_videodev()\n    -> video_device_release(mdev->vdev)\n\nUse video_device_release_empty() while registering the device so that\nregistration failure paths do not free mdev->vdev through vdev->release().\ncomp_register_videodev() then releases mdev->vdev exactly once on failure.\nRestore video_device_release() after successful registration so the\nregistered device keeps its normal lifetime handling.\n\nThis issue was found by a static analysis tool I am developing."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"009d58b73500d0b49f6ae3833f8afcb0ebd9ddbb","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"430ad4ea06a0767fb44a08e2212ceb3a996607ee","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"46ea51f5b2ee1a3b40c05b7c750cbc5cabe94062","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"4928096212b78262dbbeab3b3abf2352278ce22d","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"80ed79787da3311f76b4d71d0ce7ab992a9e134d","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"43078449ad6236d839e4d707954d2e36b10a6706","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"7fc162453cfb7b8e93edb16287a84ba0130cac38","versionType":"git"},{"version":"eab231c0398a91fbd294672bfe9e0ff45b368246","status":"affected","lessThan":"7cb1c5b32a2bfde961fff8d5204526b609bcb30a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/most/video/video.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"5.10.261","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.212","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/most/video/video.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/009d58b73500d0b49f6ae3833f8afcb0ebd9ddbb"},{"url":"https://git.kernel.org/stable/c/430ad4ea06a0767fb44a08e2212ceb3a996607ee"},{"url":"https://git.kernel.org/stable/c/46ea51f5b2ee1a3b40c05b7c750cbc5cabe94062"},{"url":"https://git.kernel.org/stable/c/4928096212b78262dbbeab3b3abf2352278ce22d"},{"url":"https://git.kernel.org/stable/c/80ed79787da3311f76b4d71d0ce7ab992a9e134d"},{"url":"https://git.kernel.org/stable/c/43078449ad6236d839e4d707954d2e36b10a6706"},{"url":"https://git.kernel.org/stable/c/7fc162453cfb7b8e93edb16287a84ba0130cac38"},{"url":"https://git.kernel.org/stable/c/7cb1c5b32a2bfde961fff8d5204526b609bcb30a"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:15:34.687Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.10.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}