media: v4l2-async: Unregister sub-device if asc_list is empty

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93101
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:18:04 UTC
Updated2026-09-17 17:18:04 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: media: v4l2-async: Unregister sub-device if asc_list is empty When my em28xx USB device that uses the i2c tvp5150 driver is disconnected, it crashes. The cause is that the tvp5150 i2c module uses v4l2_async, but the em28xx driver does not since it predates v4l2_async. In that corner case sd->asc_list is empty, so v4l2_async_unregister_subdev() never calls v4l2_device_unregister_subdev(). Modify the code so that, if sd->asc_list is empty, v4l2_device_unregister_subdev() is still called.

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.065050000 (date 2026-09-18)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 28a1295795d85a25f2e7dd391c43969e95fcb341 c7201bd08cad791858337e33ffcd90d8ae4147c2 git Not specified
CNA Linux Linux affected 28a1295795d85a25f2e7dd391c43969e95fcb341 e190320cebe921f99973c984ac53f317061a011f git Not specified
CNA Linux Linux affected 28a1295795d85a25f2e7dd391c43969e95fcb341 65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32 git Not specified
CNA Linux Linux affected 28a1295795d85a25f2e7dd391c43969e95fcb341 9fb74dce5c650cb23b60f6ba0ffcd5024e948a75 git Not specified
CNA Linux Linux affected 28a1295795d85a25f2e7dd391c43969e95fcb341 4e72f13d58c4245c177a9d5f54579345554f354d git Not specified
CNA Linux Linux affected 6.6 Not specified
CNA Linux Linux unaffected 6.6 semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/4e72f13d58c4245c177a9d5f54579345554f354d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c7201bd08cad791858337e33ffcd90d8ae4147c2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9fb74dce5c650cb23b60f6ba0ffcd5024e948a75 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e190320cebe921f99973c984ac53f317061a011f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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