{"id":"CVE-2026-80933","title":"wifi: mt76: mt7996: validate default EEPROM firmware size","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: validate default EEPROM firmware size\n\nThe default EEPROM firmware is parsed and copied as a full EEPROM\nwithout checking its length. A truncated fi…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-125"],"vendor":"Linux","product":"Linux","affected":["Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < b4bf67cc0871b13103c404b38e332b9d4403a0da","Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 127a291f4c8069a4e71906938402cacfe24ee8cd","Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 03b81f015dbb29807ce1ec6d45537d658abdac69","Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 7074ec3769820302f1ccf8794a40a6582153b820","Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 653c6e289b13cc6942f3e8f8e3c568e70fa42d1f","Linux 6.2"],"published":"2026-09-11","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:45:17.026Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80933","references":[{"url":"https://git.kernel.org/stable/c/b4bf67cc0871b13103c404b38e332b9d4403a0da"},{"url":"https://git.kernel.org/stable/c/127a291f4c8069a4e71906938402cacfe24ee8cd"},{"url":"https://git.kernel.org/stable/c/03b81f015dbb29807ce1ec6d45537d658abdac69"},{"url":"https://git.kernel.org/stable/c/7074ec3769820302f1ccf8794a40a6582153b820"},{"url":"https://git.kernel.org/stable/c/653c6e289b13cc6942f3e8f8e3c568e70fa42d1f"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80933.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80933"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532333"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80933"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80933"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80933.mbox"}],"tags":["cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00129,"epssPercentile":0.02486,"scores":{"cna":7.8,"vendor":5.5},"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80933","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: validate default EEPROM firmware size\n\nThe default EEPROM firmware is parsed and copied as a full EEPROM\nwithout checking its length. A truncated file can make the driver\nread beyond the firmware buffer during variant validation or the\nfallback copy.\n\nReject files shorter than MT7996_EEPROM_SIZE before parsing or\ncopying the firmware.\n\n## Affected\n\n- `Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < b4bf67cc0871b13103c404b38e332b9d4403a0da`\n- `Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 127a291f4c8069a4e71906938402cacfe24ee8cd`\n- `Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 03b81f015dbb29807ce1ec6d45537d658abdac69`\n- `Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 7074ec3769820302f1ccf8794a40a6582153b820`\n- `Linux >= 98686cd21624c75a043e96812beadddf4f6f48e5 < 653c6e289b13cc6942f3e8f8e3c568e70fa42d1f`\n- `Linux 6.2`\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-2026-80933.json)","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":224824,"id":"CVE-2026-80933","ts":1792401564118,"field":"cvss","old":"5.5","new":"7.8"},{"seq":224823,"id":"CVE-2026-80933","ts":1792401564118,"field":"severity","old":"medium","new":"high"},{"seq":202767,"id":"CVE-2026-80933","ts":1789403715802,"field":"cvss","old":"7.8","new":"5.5"},{"seq":202766,"id":"CVE-2026-80933","ts":1789403715802,"field":"severity","old":"high","new":"medium"},{"seq":183632,"id":"CVE-2026-80933","ts":1789356676183,"field":"cvss","old":"7.8","new":"5.7"},{"seq":183631,"id":"CVE-2026-80933","ts":1789356676183,"field":"severity","old":"high","new":"medium"},{"seq":153116,"id":"CVE-2026-80933","ts":1789285349076,"field":"cvss","old":null,"new":"7.8"},{"seq":153115,"id":"CVE-2026-80933","ts":1789285349076,"field":"severity","old":"none","new":"high"},{"seq":147367,"id":"CVE-2026-80933","ts":1789270210627,"field":"cvss","old":null,"new":"5.7"},{"seq":147366,"id":"CVE-2026-80933","ts":1789270210627,"field":"severity","old":"none","new":"medium"},{"seq":109122,"id":"CVE-2026-80933","ts":1789183730387,"field":"cvss","old":null,"new":"5.7"},{"seq":109121,"id":"CVE-2026-80933","ts":1789183730387,"field":"severity","old":"none","new":"medium"}]}