CVE-2026-80937

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80937", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.803Z", "datePublished": "2026-09-11T19:42:10.822Z", "dateUpdated": "2026-10-30T12:31:27.755Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:31:27.755Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy\n\nmt7915_mcu_get_eeprom() copies a fixed EFUSE block into the driver's\ndev->mt76.eeprom.data buffer at the offset reported by the MCU response\n(res->addr, a device-controlled __le32) without checking it against the\nbuffer size. A malicious or malfunctioning device can report an arbitrary\naddress and drive a 16-byte out-of-bounds write past eeprom.data.\n\nReject a response whose address would place the copy outside eeprom.data\nbefore deriving the destination pointer. Devices that echo the requested\nin-bounds offset are unaffected."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - The OOB write is driven by a MediaTek Wi-Fi 6 MCU EFUSE query response (mt7915/mt7916/mt7981/mt7986), not a routed IP service; the highest reasonable exposure is an adjacent attacker who can drive malicious firmware or device behavior on the local radio.\nAC:L - A malicious MCU response can set an arbitrary res->addr and 16 device-controlled payload bytes; the host then memcpy's MT7915_EEPROM_BLOCK_SIZE bytes to eeprom.data+addr with no race or other condition beyond attacker control.\nPR:N - MCU EEPROM responses are consumed in mt7915_eeprom_load() during driver bring-up with no OS credential, capability, or Wi-Fi authentication check; an adjacent attacker needs no local account.\nUI:N - The copy runs automatically in mt7915_eeprom_load() during pci_probe/platform probe after firmware load; no victim action such as mounting a filesystem or opening a file is required.\nS:U - The write corrupts host kernel heap around the mt76 EEPROM buffer and is standard kernel memory corruption, not a VM escape, IOMMU bypass, or other crossed security authority.\nC:H - Attacker-controlled destination offset and payload are kernel memory corruption that can overwrite adjacent objects and pointers and be leveraged for information disclosure, so confidentiality impact is high.\nI:H - Sixteen bytes of device-controlled data are written at a device-chosen offset past the 3584/4096-byte eeprom.data allocation, an out-of-bounds write primitive that can yield arbitrary kernel writes or control-flow hijacking.\nA:H - An unbounded kernel heap write during EEPROM init can oops, panic, or hang the host, a high availability impact on Wi-Fi 6 APs, routers, and workstations."}]}], "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/mt7915/mcu.c"], "versions": [{"version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "lessThan": "ef10a2ec2a74c4a6aa5c086fc0c2b01037569134", "status": "affected", "versionType": "git"}, {"version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "lessThan": "d6774f6af3711143a93281904a928a78652c8b7e", "status": "affected", "versionType": "git"}, {"version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "lessThan": "394e8cb56fc732d71041599cdb4e01f82cfd11c5", "status": "affected", "versionType": "git"}, {"version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "lessThan": "5fdaf7016d7684ef756a229fd5d96b4a140eeb40", "status": "affected", "versionType": "git"}, {"version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "lessThan": "5f48b0d752a76590e2c613aae5345c2474627d1b", "status": "affected", "versionType": "git"}, {"version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "lessThan": "44b5adfe49499f53002737f5fe81d608c08122fc", "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/mt7915/mcu.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "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": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.12.112"}, {"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/ef10a2ec2a74c4a6aa5c086fc0c2b01037569134"}, {"url": "https://git.kernel.org/stable/c/d6774f6af3711143a93281904a928a78652c8b7e"}, {"url": "https://git.kernel.org/stable/c/394e8cb56fc732d71041599cdb4e01f82cfd11c5"}, {"url": "https://git.kernel.org/stable/c/5fdaf7016d7684ef756a229fd5d96b4a140eeb40"}, {"url": "https://git.kernel.org/stable/c/5f48b0d752a76590e2c613aae5345c2474627d1b"}, {"url": "https://git.kernel.org/stable/c/44b5adfe49499f53002737f5fe81d608c08122fc"}], "title": "wifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7915/mcu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ef10a2ec2a74c4a6aa5c086fc0c2b01037569134", "status": "affected", "version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "versionType": "git"}, {"lessThan": "d6774f6af3711143a93281904a928a78652c8b7e", "status": "affected", "version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "versionType": "git"}, {"lessThan": "394e8cb56fc732d71041599cdb4e01f82cfd11c5", "status": "affected", "version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "versionType": "git"}, {"lessThan": "5fdaf7016d7684ef756a229fd5d96b4a140eeb40", "status": "affected", "version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "versionType": "git"}, {"lessThan": "5f48b0d752a76590e2c613aae5345c2474627d1b", "status": "affected", "version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "versionType": "git"}, {"lessThan": "44b5adfe49499f53002737f5fe81d608c08122fc", "status": "affected", "version": "e57b7901469fc0b021930b83a8094baaf3d81b09", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7915/mcu.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": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "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: mt7915: bound the device EEPROM address before the EFUSE copy\n\nmt7915_mcu_get_eeprom() copies a fixed EFUSE block into the driver's\ndev->mt76.eeprom.data buffer at the offset reported by the MCU response\n(res->addr, a device-controlled __le32) without checking it against the\nbuffer size. A malicious or malfunctioning device can report an arbitrary\naddress and drive a 16-byte out-of-bounds write past eeprom.data.\n\nReject a response whose address would place the copy outside eeprom.data\nbefore deriving the destination pointer. Devices that echo the requested\nin-bounds offset are unaffected."}], "id": "CVE-2026-80937", "lastModified": "2026-10-30T13:20:13.983", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-11T20:18:57.627", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/394e8cb56fc732d71041599cdb4e01f82cfd11c5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/44b5adfe49499f53002737f5fe81d608c08122fc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5f48b0d752a76590e2c613aae5345c2474627d1b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5fdaf7016d7684ef756a229fd5d96b4a140eeb40"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d6774f6af3711143a93281904a928a78652c8b7e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ef10a2ec2a74c4a6aa5c086fc0c2b01037569134"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Wi-Fi driver out-of-bounds write via malicious device EEPROM address", "id": "2532388", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532388"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.8", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in the Linux kernel's Wi-Fi driver for mt7915 chipsets. This vulnerability allows a malicious or malfunctioning Wi-Fi device to provide an invalid memory address. This can cause the driver to write data beyond its allocated memory, leading to an out-of-bounds write. Such memory corruption could potentially compromise system stability or allow for unauthorized code execution."], "name": "CVE-2026-80937", "public_date": "2026-09-11T19:42:10Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80937\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80937\nhttps://git.kernel.org/stable/c/44b5adfe49499f53002737f5fe81d608c08122fc\nhttps://git.kernel.org/stable/c/5f48b0d752a76590e2c613aae5345c2474627d1b\nhttps://git.kernel.org/stable/c/5fdaf7016d7684ef756a229fd5d96b4a140eeb40"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e57b7901469fc0b021930b83a8094baaf3d81b09,5fdaf7016d7684ef756a229fd5d96b4a140eeb40)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e57b7901469fc0b021930b83a8094baaf3d81b09,5f48b0d752a76590e2c613aae5345c2474627d1b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e57b7901469fc0b021930b83a8094baaf3d81b09,44b5adfe49499f53002737f5fe81d608c08122fc)"}}], "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": "generic", "value": "[6.18.50,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.4,7.2.*]"}}, {"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": "2026-09-12T19:45:06.211977+00:00", "updated": "2026-09-21T04:00:13.523924+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-787"]}