{"id":"CVE-2026-80935","revision":"b187c650c03644abb1b08f8bc217a862","records":[{"revision":"b187c650c03644abb1b08f8bc217a862","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80935","aliases":[],"title":"wifi: mt76: mt7996: bound the device EEPROM address before the EFUSE copy","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: bound the device EEPROM address before the EFUSE copy\n\nmt7996_mcu_get_eeprom() derives the destination of the EFUSE/EXT block\ncopy from the address reported by the MCU response (event->addr, a\ndevice-controlled __le32) and clamps only the copy length, never the\ndestination offset into dev->mt76.eeprom.data. A malicious or\nmalfunctioning device can report an arbitrary address and drive an\nout-of-bounds write of up to MT7996_EXT_EEPROM_BLOCK_SIZE bytes past\neeprom.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.","state":0,"publishedAt":"2026-09-11T19:42:09.286+00:00","modifiedAt":"2026-10-21T12:47:15.492+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/mediatek/mt76/mt7996/mcu.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"98686cd21624c75a043e96812beadddf4f6f48e5\",\n                            \"lessThan\": \"4892be1ef0bbe6db6b13bf46cb79b6706bb5b214\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"98686cd21624c75a043e96812beadddf4f6f48e5\",\n                            \"lessThan\": \"388f471ca4758f644394b681ce97677a4d0e772c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"98686cd21624c75a043e96812beadddf4f6f48e5\",\n                            \"lessThan\": \"9e5abb5e2ade0b6fd0e47209711115d47a255176\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"98686cd21624c75a043e96812beadddf4f6f48e5\",\n                            \"lessThan\": \"6be59da2063d5b3522bfde8aae0487ec095eb384\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"98686cd21624c75a043e96812beadddf4f6f48e5\",\n                            \"lessThan\": \"13b3c29a782033ce4a230be9e5618032813dbcd4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/mediatek/mt76/mt7996/mcu.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/4892be1ef0bbe6db6b13bf46cb79b6706bb5b214","https://git.kernel.org/stable/c/388f471ca4758f644394b681ce97677a4d0e772c","https://git.kernel.org/stable/c/9e5abb5e2ade0b6fd0e47209711115d47a255176","https://git.kernel.org/stable/c/6be59da2063d5b3522bfde8aae0487ec095eb384","https://git.kernel.org/stable/c/13b3c29a782033ce4a230be9e5618032813dbcd4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80935","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80935","identifiers":["CVE-2026-80935"]},"retained":false,"historicalAffected":[]}],"coverage":[]}