{"id":"CVE-2026-64491","state":"PUBLISHED","title":"ALSA: usx2y: us144mkii: fix work UAF on disconnect","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usx2y: us144mkii: fix work UAF on disconnect\n\ntascam_disconnect() cancels capture_work and midi_in_work before\nusb_kill_anchored_urbs() kills the capture/MIDI-in URBs.  Those URBs\nself-resubmit, and their completion handlers reschedule the work.\n\nA URB that completes in the small window between cancel_work_sync() and\nusb_kill_anchored_urbs() therefore re-arms the work after its only\ncancel.  Nothing cancels it again before snd_card_free() frees the\ncard-private tascam structure, so the work handler then runs on freed\nmemory.\n\nKill the anchored URBs before cancelling the work; once the work is\ncancelled no remaining URB can complete to re-arm it.","publishedAt":"2026-07-25T08:51:49.601Z","updatedAt":"2026-08-17T04:56:39.296Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c1bb0c13e430623c26543baae5bb9ae21139db87","status":"affected","lessThan":"c071df05bcda0e47aac581d4b564b2bebcb1ff60","versionType":"git"},{"version":"c1bb0c13e430623c26543baae5bb9ae21139db87","status":"affected","lessThan":"27161c68d5e78807c9d897db222a775b298d05fd","versionType":"git"},{"version":"c1bb0c13e430623c26543baae5bb9ae21139db87","status":"affected","lessThan":"147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/usx2y/us144mkii.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.39","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.4","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":["sound/usb/usx2y/us144mkii.c"]}],"references":["https://git.kernel.org/stable/c/c071df05bcda0e47aac581d4b564b2bebcb1ff60","https://git.kernel.org/stable/c/27161c68d5e78807c9d897db222a775b298d05fd","https://git.kernel.org/stable/c/147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64491.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64491","state":"PUBLISHED","datePublished":"2026-07-25T08:51:49.601Z","dateUpdated":"2026-08-17T04:56:39.296Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T15:36:31.792Z"},"containers":{"cna":{"title":"ALSA: usx2y: us144mkii: fix work UAF on disconnect","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usx2y: us144mkii: fix work UAF on disconnect\n\ntascam_disconnect() cancels capture_work and midi_in_work before\nusb_kill_anchored_urbs() kills the capture/MIDI-in URBs.  Those URBs\nself-resubmit, and their completion handlers reschedule the work.\n\nA URB that completes in the small window between cancel_work_sync() and\nusb_kill_anchored_urbs() therefore re-arms the work after its only\ncancel.  Nothing cancels it again before snd_card_free() frees the\ncard-private tascam structure, so the work handler then runs on freed\nmemory.\n\nKill the anchored URBs before cancelling the work; once the work is\ncancelled no remaining URB can complete to re-arm it."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c1bb0c13e430623c26543baae5bb9ae21139db87","status":"affected","lessThan":"c071df05bcda0e47aac581d4b564b2bebcb1ff60","versionType":"git"},{"version":"c1bb0c13e430623c26543baae5bb9ae21139db87","status":"affected","lessThan":"27161c68d5e78807c9d897db222a775b298d05fd","versionType":"git"},{"version":"c1bb0c13e430623c26543baae5bb9ae21139db87","status":"affected","lessThan":"147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/usb/usx2y/us144mkii.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.39","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.4","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":["sound/usb/usx2y/us144mkii.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c071df05bcda0e47aac581d4b564b2bebcb1ff60"},{"url":"https://git.kernel.org/stable/c/27161c68d5e78807c9d897db222a775b298d05fd"},{"url":"https://git.kernel.org/stable/c/147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T04:56:39.296Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"6.18.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.1.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}