CVE-2026-72484

In the Linux kernel, the following vulnerability has been resolved: staging: most: video: avoid double free on video register failure comp_register_videodev() allocates a video_device with video_device_alloc() and releases it if video_register_device() fails. This can double free the video_device when __video_register_device() reaches device_register() and that call fails: video_register_device() -> __video_register_device() -> device_register() fails -> put_device(&vdev->dev) -> v4l2_device_release() -> vdev->release(vdev) -> video_device_release(vdev) comp_register_videodev() -> video_device_release(mdev->vdev) Use video_device_release_empty() while registering the device so that registration failure paths do not free mdev->vdev through vdev->release(). comp_register_videodev() then releases mdev->vdev exactly once on failure. Restore video_device_release() after successful registration so the registered device keeps its normal lifetime handling. This issue was found by a static analysis tool I am developing.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/009d58b73500d0b49f6ae3833f8afcb0ebd9ddbb
https://git.kernel.org/stable/c/43078449ad6236d839e4d707954d2e36b10a6706
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/7cb1c5b32a2bfde961fff8d5204526b609bcb30a
https://git.kernel.org/stable/c/7fc162453cfb7b8e93edb16287a84ba0130cac38
https://git.kernel.org/stable/c/80ed79787da3311f76b4d71d0ce7ab992a9e134d

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:22

Updated : 2026-08-17 06:19

NVD link : CVE-2026-72484

Mitre link : CVE-2026-72484

CVE.ORG link : CVE-2026-72484

JSON object : View

Products Affected

No product.

CWE

No CWE.

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"80ed79787da3311f76b4d71d0ce7ab992a9e134d", "versionType": "git"}, {"status": "affected", "version": "eab231c0398a91fbd294672bfe9e0ff45b368246", "lessThan": "43078449ad6236d839e4d707954d2e36b10a6706", "versionType": "git"}, {"status": "affected", "version": "eab231c0398a91fbd294672bfe9e0ff45b368246", "lessThan": "7fc162453cfb7b8e93edb16287a84ba0130cac38", "versionType": "git"}, {"status": "affected", "version": "eab231c0398a91fbd294672bfe9e0ff45b368246", "lessThan": "7cb1c5b32a2bfde961fff8d5204526b609bcb30a", "versionType": "git"}], "programFiles": ["drivers/staging/most/video/video.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.9"}, {"status": "unaffected", "version": "0", "lessThan": "4.9", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.261", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.97", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.40", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.5", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/staging/most/video/video.c"], "defaultStatus": "affected"}]}], "published": "2026-08-15T06:22:22.647", "references": [{"url": "https://git.kernel.org/stable/c/009d58b73500d0b49f6ae3833f8afcb0ebd9ddbb", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/43078449ad6236d839e4d707954d2e36b10a6706", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/430ad4ea06a0767fb44a08e2212ceb3a996607ee", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/46ea51f5b2ee1a3b40c05b7c750cbc5cabe94062", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4928096212b78262dbbeab3b3abf2352278ce22d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7cb1c5b32a2bfde961fff8d5204526b609bcb30a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7fc162453cfb7b8e93edb16287a84ba0130cac38", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/80ed79787da3311f76b4d71d0ce7ab992a9e134d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "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."}], "lastModified": "2026-08-17T06:19:16.603", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}