{"id":"CVE-2026-93101","state":"PUBLISHED","title":"media: v4l2-async: Unregister sub-device if asc_list is empty","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: v4l2-async: Unregister sub-device if asc_list is empty\n\nWhen my em28xx USB device that uses the i2c tvp5150 driver is\ndisconnected, it crashes.\n\nThe cause is that the tvp5150 i2c module uses v4l2_async, but\nthe em28xx driver does not since it predates v4l2_async.\n\nIn that corner case sd->asc_list is empty, so\nv4l2_async_unregister_subdev() never calls v4l2_device_unregister_subdev().\n\nModify the code so that, if sd->asc_list is empty,\nv4l2_device_unregister_subdev() is still called.","publishedAt":"2026-09-17T16:11:13.738Z","updatedAt":"2026-10-19T09:05:34.229Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"28a1295795d85a25f2e7dd391c43969e95fcb341","status":"affected","lessThan":"c7201bd08cad791858337e33ffcd90d8ae4147c2","versionType":"git"},{"version":"28a1295795d85a25f2e7dd391c43969e95fcb341","status":"affected","lessThan":"e190320cebe921f99973c984ac53f317061a011f","versionType":"git"},{"version":"28a1295795d85a25f2e7dd391c43969e95fcb341","status":"affected","lessThan":"65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32","versionType":"git"},{"version":"28a1295795d85a25f2e7dd391c43969e95fcb341","status":"affected","lessThan":"9fb74dce5c650cb23b60f6ba0ffcd5024e948a75","versionType":"git"},{"version":"28a1295795d85a25f2e7dd391c43969e95fcb341","status":"affected","lessThan":"4e72f13d58c4245c177a9d5f54579345554f354d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/v4l2-core/v4l2-async.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/v4l2-core/v4l2-async.c"]}],"references":["https://git.kernel.org/stable/c/c7201bd08cad791858337e33ffcd90d8ae4147c2","https://git.kernel.org/stable/c/e190320cebe921f99973c984ac53f317061a011f","https://git.kernel.org/stable/c/65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32","https://git.kernel.org/stable/c/9fb74dce5c650cb23b60f6ba0ffcd5024e948a75","https://git.kernel.org/stable/c/4e72f13d58c4245c177a9d5f54579345554f354d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93101.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93101","state":"PUBLISHED","datePublished":"2026-09-17T16:11:13.738Z","dateUpdated":"2026-10-19T09:05:34.229Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T16:02:15.085Z"},"containers":{"cna":{"title":"media: v4l2-async: Unregister sub-device if asc_list is empty","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: v4l2-async: Unregister sub-device if asc_list is empty\n\nWhen my em28xx USB device that uses the i2c tvp5150 driver is\ndisconnected, it crashes.\n\nThe cause is that the tvp5150 i2c module uses v4l2_async, but\nthe em28xx driver does not since it predates v4l2_async.\n\nIn that corner case sd->asc_list is empty, so\nv4l2_async_unregister_subdev() never calls v4l2_device_unregister_subdev().\n\nModify the code so that, if sd->asc_list is empty,\nv4l2_device_unregister_subdev() is still called."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"28a1295795d85a25f2e7dd391c43969e95fcb341","status":"affected","lessThan":"c7201bd08cad791858337e33ffcd90d8ae4147c2","versionType":"git"},{"version":"28a1295795d85a25f2e7dd391c43969e95fcb341","status":"affected","lessThan":"e190320cebe921f99973c984ac53f317061a011f","versionType":"git"},{"version":"28a1295795d85a25f2e7dd391c43969e95fcb341","status":"affected","lessThan":"65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32","versionType":"git"},{"version":"28a1295795d85a25f2e7dd391c43969e95fcb341","status":"affected","lessThan":"9fb74dce5c650cb23b60f6ba0ffcd5024e948a75","versionType":"git"},{"version":"28a1295795d85a25f2e7dd391c43969e95fcb341","status":"affected","lessThan":"4e72f13d58c4245c177a9d5f54579345554f354d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/v4l2-core/v4l2-async.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/v4l2-core/v4l2-async.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c7201bd08cad791858337e33ffcd90d8ae4147c2"},{"url":"https://git.kernel.org/stable/c/e190320cebe921f99973c984ac53f317061a011f"},{"url":"https://git.kernel.org/stable/c/65e55f34fb2d61cb4f8a5dfcb93848af2aea0f32"},{"url":"https://git.kernel.org/stable/c/9fb74dce5c650cb23b60f6ba0ffcd5024e948a75"},{"url":"https://git.kernel.org/stable/c/4e72f13d58c4245c177a9d5f54579345554f354d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:05:34.229Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}