{"id":"CVE-2026-80935","title":"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 …","summary":"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 …","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-787"],"vendor":"Linux","product":"Linux","affected":["Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 388f471ca4758f644394b681ce97677a4d0e772c","Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 9e5abb5e2ade0b6fd0e47209711115d47a255176","Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 6be59da2063d5b3522bfde8aae0487ec095eb384","Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 13b3c29a782033ce4a230be9e5618032813dbcd4","Linux 6.2"],"published":"2026-09-11","updated":"2026-10-03","sourceUpdated":"2026-10-03T11:17:41.060","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80935","references":[{"url":"https://git.kernel.org/stable/c/13b3c29a782033ce4a230be9e5618032813dbcd4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/388f471ca4758f644394b681ce97677a4d0e772c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6be59da2063d5b3522bfde8aae0487ec095eb384","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9e5abb5e2ade0b6fd0e47209711115d47a255176","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80935.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80935"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532054"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80935"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80935"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80935.mbox"},{"url":"https://git.kernel.org/stable/c/4892be1ef0bbe6db6b13bf46cb79b6706bb5b214"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00255,"epssPercentile":0.16947,"scores":{"nvd":8.8,"vendor":5.5,"cna":8.8},"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80935","body":"## Overview\n\nIn 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.\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-2026-80935.json)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":215283,"id":"CVE-2026-80935","ts":1791027879531,"field":"cvss","old":"5.5","new":"8.8"},{"seq":215282,"id":"CVE-2026-80935","ts":1791027879531,"field":"severity","old":"medium","new":"high"},{"seq":204211,"id":"CVE-2026-80935","ts":1789490240197,"field":"cvss","old":"8.8","new":"5.5"},{"seq":204210,"id":"CVE-2026-80935","ts":1789490240197,"field":"severity","old":"high","new":"medium"},{"seq":183825,"id":"CVE-2026-80935","ts":1789356677566,"field":"cvss","old":"8.8","new":"6.4"},{"seq":183824,"id":"CVE-2026-80935","ts":1789356677566,"field":"severity","old":"high","new":"medium"},{"seq":153118,"id":"CVE-2026-80935","ts":1789285349085,"field":"cvss","old":null,"new":"8.8"},{"seq":153117,"id":"CVE-2026-80935","ts":1789285349085,"field":"severity","old":"none","new":"high"},{"seq":109598,"id":"CVE-2026-80935","ts":1789183732565,"field":"cvss","old":null,"new":"6.4"},{"seq":109597,"id":"CVE-2026-80935","ts":1789183732565,"field":"severity","old":"none","new":"medium"}]}