{"api_version":"1","generated_at":"2026-08-04T07:35:37+00:00","cve":"CVE-2026-64491","urls":{"html":"https://cve.report/CVE-2026-64491","api":"https://cve.report/api/cve/CVE-2026-64491.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64491","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64491"},"summary":{"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:34","updated_at":"2026-07-25 10:17:34"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/c071df05bcda0e47aac581d4b564b2bebcb1ff60","name":"https://git.kernel.org/stable/c/c071df05bcda0e47aac581d4b564b2bebcb1ff60","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7","name":"https://git.kernel.org/stable/c/147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/27161c68d5e78807c9d897db222a775b298d05fd","name":"https://git.kernel.org/stable/c/27161c68d5e78807c9d897db222a775b298d05fd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64491","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64491","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c1bb0c13e430623c26543baae5bb9ae21139db87 c071df05bcda0e47aac581d4b564b2bebcb1ff60 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c1bb0c13e430623c26543baae5bb9ae21139db87 27161c68d5e78807c9d897db222a775b298d05fd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c1bb0c13e430623c26543baae5bb9ae21139db87 147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64491","cve":"CVE-2026-64491","epss":"0.001740000","percentile":"0.071540000","score_date":"2026-07-28","updated_at":"2026-07-29 00:05:33"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["sound/usb/usx2y/us144mkii.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c071df05bcda0e47aac581d4b564b2bebcb1ff60","status":"affected","version":"c1bb0c13e430623c26543baae5bb9ae21139db87","versionType":"git"},{"lessThan":"27161c68d5e78807c9d897db222a775b298d05fd","status":"affected","version":"c1bb0c13e430623c26543baae5bb9ae21139db87","versionType":"git"},{"lessThan":"147996e7e7c9e8339c0e04f6fa7ccb3e4d448ff7","status":"affected","version":"c1bb0c13e430623c26543baae5bb9ae21139db87","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["sound/usb/usx2y/us144mkii.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc2","versionStartIncluding":"6.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-07-25T08:51:49.601Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}],"title":"ALSA: usx2y: us144mkii: fix work UAF on disconnect","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64491","datePublished":"2026-07-25T08:51:49.601Z","dateReserved":"2026-07-19T15:36:31.792Z","dateUpdated":"2026-07-25T08:51:49.601Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:34","lastModifiedDate":"2026-07-25 10:17:34","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64491","Ordinal":"1","Title":"ALSA: usx2y: us144mkii: fix work UAF on disconnect","CVE":"CVE-2026-64491","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64491","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"ALSA: usx2y: us144mkii: fix work UAF on disconnect"}]}}}