{"id":"CVE-2026-80933","title":"kernel: wifi: mt76: mt7996: validate default EEPROM firmware size (CVE-2026-80933)","summary":"A flaw was found in the Linux kernel's mt76: mt7996 Wi-Fi driver. This vulnerability occurs because the driver does not properly validate the size of the default EEPROM (Electrically Erasable Programmable Read-Only Memory) firmware. A spec…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-125","vendor":"Red Hat","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":"2026-09-14","sourceUpdated":"2026-09-14T14:48:19+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80933.json","references":[{"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"},{"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"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00128,"epssPercentile":0.0285,"scores":{"vendor":5.5,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80933","body":"## Overview\n\nA flaw was found in the Linux kernel's mt76: mt7996 Wi-Fi driver. This vulnerability occurs because the driver does not properly validate the size of the default EEPROM (Electrically Erasable Programmable Read-Only Memory) firmware. A specially crafted, truncated EEPROM firmware file can cause the driver to read beyond its allocated buffer, potentially leading to information disclosure or a denial of service.\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)\n\n**kernel: wifi: mt76: mt7996: validate default EEPROM firmware size** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.\n\nNot affected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nRefer to the advisory for fix availability.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"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"}]}