{"id":"CVE-2026-80938","title":"wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex","summary":"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.  m…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-833"],"vendor":"Linux","product":"Linux","affected":["Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < 36c73b86a09f0e51c0f81a75c8945b6c5557ff27","Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < 33d29aeb4c0eede92622a7d04ea492b94c30f089","Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < ef2ec8b537c3a54e241d693bd03016f80d0d4484","Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < 3114d479f2a1d31b2e6214c395794c6e5715e579","Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < 4506e229b2e468b8c64bcf52c50c41a3bf2e633e","Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < 44be85af3e1772ffb3332feafedad2a73b22854c","Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < bda8324270b1ac91bfba1df8928e0570e29759e8","Linux 5.8"],"published":"2026-09-11","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:45:22.189Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80938","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"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80938.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80938"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532443"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80938"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80938"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80938.mbox"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00173,"epssPercentile":0.06639,"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80938","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < 36c73b86a09f0e51c0f81a75c8945b6c5557ff27`\n- `Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < 33d29aeb4c0eede92622a7d04ea492b94c30f089`\n- `Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < ef2ec8b537c3a54e241d693bd03016f80d0d4484`\n- `Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < 3114d479f2a1d31b2e6214c395794c6e5715e579`\n- `Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < 4506e229b2e468b8c64bcf52c50c41a3bf2e633e`\n- `Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < 44be85af3e1772ffb3332feafedad2a73b22854c`\n- `Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 < bda8324270b1ac91bfba1df8928e0570e29759e8`\n- `Linux 5.8`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80938.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":202741,"id":"CVE-2026-80938","ts":1789403715392,"field":"cvss","old":null,"new":"5.5"},{"seq":202740,"id":"CVE-2026-80938","ts":1789403715392,"field":"severity","old":"none","new":"medium"},{"seq":147229,"id":"CVE-2026-80938","ts":1789270202853,"field":"cvss","old":null,"new":"4.4"},{"seq":147228,"id":"CVE-2026-80938","ts":1789270202853,"field":"severity","old":"none","new":"medium"},{"seq":108986,"id":"CVE-2026-80938","ts":1789183729846,"field":"cvss","old":null,"new":"4.4"},{"seq":108985,"id":"CVE-2026-80938","ts":1789183729846,"field":"severity","old":"none","new":"medium"}]}