{"id":"CVE-2026-74437","state":"PUBLISHED","title":"media: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work\n\nIf a UVC camera has an asynchronous control, uvc_status_stop may be\ncalled from async_ctrl.work:\n\nuvc_ctrl_status_event_work()\n    uvc_ctrl_status_event()\n        uvc_ctrl_clear_handle()\n\t    uvc_pm_put()\n\t        uvc_status_put()\n\t\t    uvc_status_stop()\n\t\t        cancel_work_sync()\n\nThis will cause a deadlock, since cancel_work_sync will wait for\nuvc_ctrl_status_event_work to complete before returning.\n\nFix this by returning early from uvc_status_stop if we are currently in\nthe work function. flush_status now remains false until uvc_status_start\nis called again, ensuring that uvc_ctrl_status_event_work won't resubmit\nthe URB.","publishedAt":"2026-08-15T05:59:35.297Z","updatedAt":"2026-08-17T05:19:23.869Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a32d9c41bdb86e09ce731aa5fd3add89ac2103a5","status":"affected","lessThan":"3659deaf7bf690510899a73906b772740d94342c","versionType":"git"},{"version":"a32d9c41bdb86e09ce731aa5fd3add89ac2103a5","status":"affected","lessThan":"7f6c5fe1633272c926361b73d83dfc6ae01b1504","versionType":"git"},{"version":"a32d9c41bdb86e09ce731aa5fd3add89ac2103a5","status":"affected","lessThan":"6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/uvc/uvc_status.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.16","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/media/usb/uvc/uvc_status.c"]}],"references":["https://git.kernel.org/stable/c/3659deaf7bf690510899a73906b772740d94342c","https://git.kernel.org/stable/c/7f6c5fe1633272c926361b73d83dfc6ae01b1504","https://git.kernel.org/stable/c/6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74437.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74437","state":"PUBLISHED","datePublished":"2026-08-15T05:59:35.297Z","dateUpdated":"2026-08-17T05:19:23.869Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.897Z"},"containers":{"cna":{"title":"media: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work\n\nIf a UVC camera has an asynchronous control, uvc_status_stop may be\ncalled from async_ctrl.work:\n\nuvc_ctrl_status_event_work()\n    uvc_ctrl_status_event()\n        uvc_ctrl_clear_handle()\n\t    uvc_pm_put()\n\t        uvc_status_put()\n\t\t    uvc_status_stop()\n\t\t        cancel_work_sync()\n\nThis will cause a deadlock, since cancel_work_sync will wait for\nuvc_ctrl_status_event_work to complete before returning.\n\nFix this by returning early from uvc_status_stop if we are currently in\nthe work function. flush_status now remains false until uvc_status_start\nis called again, ensuring that uvc_ctrl_status_event_work won't resubmit\nthe URB."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a32d9c41bdb86e09ce731aa5fd3add89ac2103a5","status":"affected","lessThan":"3659deaf7bf690510899a73906b772740d94342c","versionType":"git"},{"version":"a32d9c41bdb86e09ce731aa5fd3add89ac2103a5","status":"affected","lessThan":"7f6c5fe1633272c926361b73d83dfc6ae01b1504","versionType":"git"},{"version":"a32d9c41bdb86e09ce731aa5fd3add89ac2103a5","status":"affected","lessThan":"6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/uvc/uvc_status.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.16","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/media/usb/uvc/uvc_status.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3659deaf7bf690510899a73906b772740d94342c"},{"url":"https://git.kernel.org/stable/c/7f6c5fe1633272c926361b73d83dfc6ae01b1504"},{"url":"https://git.kernel.org/stable/c/6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:19:23.869Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}