CVE-2026-80938

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80938", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.803Z", "datePublished": "2026-09-11T19:42:11.588Z", "dateUpdated": "2026-10-19T08:45:22.189Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:45:22.189Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7615/main.c"], "versions": [{"version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "lessThan": "36c73b86a09f0e51c0f81a75c8945b6c5557ff27", "status": "affected", "versionType": "git"}, {"version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "lessThan": "33d29aeb4c0eede92622a7d04ea492b94c30f089", "status": "affected", "versionType": "git"}, {"version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "lessThan": "ef2ec8b537c3a54e241d693bd03016f80d0d4484", "status": "affected", "versionType": "git"}, {"version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "lessThan": "3114d479f2a1d31b2e6214c395794c6e5715e579", "status": "affected", "versionType": "git"}, {"version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "lessThan": "4506e229b2e468b8c64bcf52c50c41a3bf2e633e", "status": "affected", "versionType": "git"}, {"version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "lessThan": "44be85af3e1772ffb3332feafedad2a73b22854c", "status": "affected", "versionType": "git"}, {"version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "lessThan": "bda8324270b1ac91bfba1df8928e0570e29759e8", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7615/main.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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"}]}]}], "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"}], "title": "wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7615/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "36c73b86a09f0e51c0f81a75c8945b6c5557ff27", "status": "affected", "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "versionType": "git"}, {"lessThan": "33d29aeb4c0eede92622a7d04ea492b94c30f089", "status": "affected", "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "versionType": "git"}, {"lessThan": "ef2ec8b537c3a54e241d693bd03016f80d0d4484", "status": "affected", "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "versionType": "git"}, {"lessThan": "3114d479f2a1d31b2e6214c395794c6e5715e579", "status": "affected", "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "versionType": "git"}, {"lessThan": "4506e229b2e468b8c64bcf52c50c41a3bf2e633e", "status": "affected", "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "versionType": "git"}, {"lessThan": "44be85af3e1772ffb3332feafedad2a73b22854c", "status": "affected", "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "versionType": "git"}, {"lessThan": "bda8324270b1ac91bfba1df8928e0570e29759e8", "status": "affected", "version": "c6bf20109a3fae92402cb76ad709ec5256bcd169", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7615/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"lessThan": "5.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-80938", "lastModified": "2026-10-19T09:17:25.010", "metrics": {}, "published": "2026-09-11T20:18:58.053", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3114d479f2a1d31b2e6214c395794c6e5715e579"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/33d29aeb4c0eede92622a7d04ea492b94c30f089"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/36c73b86a09f0e51c0f81a75c8945b6c5557ff27"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/44be85af3e1772ffb3332feafedad2a73b22854c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4506e229b2e468b8c64bcf52c50c41a3bf2e633e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bda8324270b1ac91bfba1df8928e0570e29759e8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ef2ec8b537c3a54e241d693bd03016f80d0d4484"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel `mt7615` Wi-Fi driver: Denial of Service due to deadlock during suspend.", "id": "2532443", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532443"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-833", "details": ["A flaw was found in the Linux kernel, specifically within the `mt7615` Wi-Fi driver. A deadlock can occur during system suspend operations when the suspend process attempts to acquire a mutex (a locking mechanism) while simultaneously waiting for a work item (`mac_work`) that also requires the same mutex. If `mac_work` is already running and blocked on the mutex, the suspend path will indefinitely wait for the work it holds the mutex against. This can result in a Denial of Service (DoS), making the system unresponsive."], "name": "CVE-2026-80938", "public_date": "2026-09-11T19:42:11Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80938\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80938\nhttps://git.kernel.org/stable/c/3114d479f2a1d31b2e6214c395794c6e5715e579\nhttps://git.kernel.org/stable/c/44be85af3e1772ffb3332feafedad2a73b22854c\nhttps://git.kernel.org/stable/c/4506e229b2e468b8c64bcf52c50c41a3bf2e633e\nhttps://git.kernel.org/stable/c/bda8324270b1ac91bfba1df8928e0570e29759e8"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c6bf20109a3fae92402cb76ad709ec5256bcd169,3114d479f2a1d31b2e6214c395794c6e5715e579)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c6bf20109a3fae92402cb76ad709ec5256bcd169,4506e229b2e468b8c64bcf52c50c41a3bf2e633e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c6bf20109a3fae92402cb76ad709ec5256bcd169,44be85af3e1772ffb3332feafedad2a73b22854c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c6bf20109a3fae92402cb76ad709ec5256bcd169,bda8324270b1ac91bfba1df8928e0570e29759e8)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.109,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.50,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-12T19:45:06.211642+00:00", "updated": "2026-09-21T04:15:08.805487+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}