{"id":"CVE-2026-80938","state":"PUBLISHED","title":"wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex\n\nmt7615_suspend() acquired the mt76 mutex and then called\ncancel_delayed_work_sync() on mac_work.  mt7615_mac_work() acquires the\nsame mutex via mt7615_mutex_acquire() at the top of the worker, so if\nmac_work is already running and blocked on the mutex, the suspend path\ndeadlocks waiting for the work it holds the mutex against.\n\nFlush scan_work and mac_work before taking the mutex, matching the\nsuspend paths in mt7921 and mt7925.  scan_work only takes the mt76\nspinlock, but moving it keeps the sequence consistent.  This also keeps\nmac_work from running over an already suspended HIF, which the previous\nsplit (async cancel under the lock, sync cancel after release) would\nhave allowed.","publishedAt":"2026-09-11T19:42:11.588Z","updatedAt":"2026-10-19T08:45:22.189Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"36c73b86a09f0e51c0f81a75c8945b6c5557ff27","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"33d29aeb4c0eede92622a7d04ea492b94c30f089","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"ef2ec8b537c3a54e241d693bd03016f80d0d4484","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"3114d479f2a1d31b2e6214c395794c6e5715e579","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"4506e229b2e468b8c64bcf52c50c41a3bf2e633e","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"44be85af3e1772ffb3332feafedad2a73b22854c","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"bda8324270b1ac91bfba1df8928e0570e29759e8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7615/main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","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/net/wireless/mediatek/mt76/mt7615/main.c"]}],"references":["https://git.kernel.org/stable/c/36c73b86a09f0e51c0f81a75c8945b6c5557ff27","https://git.kernel.org/stable/c/33d29aeb4c0eede92622a7d04ea492b94c30f089","https://git.kernel.org/stable/c/ef2ec8b537c3a54e241d693bd03016f80d0d4484","https://git.kernel.org/stable/c/3114d479f2a1d31b2e6214c395794c6e5715e579","https://git.kernel.org/stable/c/4506e229b2e468b8c64bcf52c50c41a3bf2e633e","https://git.kernel.org/stable/c/44be85af3e1772ffb3332feafedad2a73b22854c","https://git.kernel.org/stable/c/bda8324270b1ac91bfba1df8928e0570e29759e8"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80938.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80938","state":"PUBLISHED","datePublished":"2026-09-11T19:42:11.588Z","dateUpdated":"2026-10-19T08:45:22.189Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.803Z"},"containers":{"cna":{"title":"wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex\n\nmt7615_suspend() acquired the mt76 mutex and then called\ncancel_delayed_work_sync() on mac_work.  mt7615_mac_work() acquires the\nsame mutex via mt7615_mutex_acquire() at the top of the worker, so if\nmac_work is already running and blocked on the mutex, the suspend path\ndeadlocks waiting for the work it holds the mutex against.\n\nFlush scan_work and mac_work before taking the mutex, matching the\nsuspend paths in mt7921 and mt7925.  scan_work only takes the mt76\nspinlock, but moving it keeps the sequence consistent.  This also keeps\nmac_work from running over an already suspended HIF, which the previous\nsplit (async cancel under the lock, sync cancel after release) would\nhave allowed."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"36c73b86a09f0e51c0f81a75c8945b6c5557ff27","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"33d29aeb4c0eede92622a7d04ea492b94c30f089","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"ef2ec8b537c3a54e241d693bd03016f80d0d4484","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"3114d479f2a1d31b2e6214c395794c6e5715e579","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"4506e229b2e468b8c64bcf52c50c41a3bf2e633e","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"44be85af3e1772ffb3332feafedad2a73b22854c","versionType":"git"},{"version":"c6bf20109a3fae92402cb76ad709ec5256bcd169","status":"affected","lessThan":"bda8324270b1ac91bfba1df8928e0570e29759e8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7615/main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","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/net/wireless/mediatek/mt76/mt7615/main.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/36c73b86a09f0e51c0f81a75c8945b6c5557ff27"},{"url":"https://git.kernel.org/stable/c/33d29aeb4c0eede92622a7d04ea492b94c30f089"},{"url":"https://git.kernel.org/stable/c/ef2ec8b537c3a54e241d693bd03016f80d0d4484"},{"url":"https://git.kernel.org/stable/c/3114d479f2a1d31b2e6214c395794c6e5715e579"},{"url":"https://git.kernel.org/stable/c/4506e229b2e468b8c64bcf52c50c41a3bf2e633e"},{"url":"https://git.kernel.org/stable/c/44be85af3e1772ffb3332feafedad2a73b22854c"},{"url":"https://git.kernel.org/stable/c/bda8324270b1ac91bfba1df8928e0570e29759e8"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:45:22.189Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}