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  4. CVE 2026 80933 wifi mt76 mt7996 validate default eeprom firmware
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Back to active CVEs
High · CVSS 7.8CVE-2026-80933

wifi: mt76: mt7996: validate default EEPROM firmware sizeCVE-2026-80933

Answer in brief

CVE-2026-80933 records a High severity (CVSS 7.8) vulnerability in wifi: mt76: mt7996: validate default EEPROM firmware size. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Oct 19, 2026Source checked Oct 27, 2026First seen by HOL Sep 11, 2026Material review Oct 19, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=98686cd21624c75a043e96812beadddf4f6f48e5 <03b81f015dbb29807ce1ec6d45537d658abdac69 || >=98686cd21624c75a043e96812beadddf4f6f48e5 <7074ec3769820302f1ccf8794a40a6582153b820 || >=98686cd21624c75a043e96812beadddf4f6f48e5 <653c6e289b13cc6942f3e8f8e3c568e70fa42d1f03b81f015dbb29807ce1ec6d45537d658abdac69, 7074ec3769820302f1ccf8794a40a6582153b820, 653c6e289b13cc6942f3e8f8e3c568e70fa42d1f
Linux/Linuxgeneric6.2Not reported
Linux/Linuxgeneric>=98686cd21624c75a043e96812beadddf4f6f48e5 <b4bf67cc0871b13103c404b38e332b9d4403a0da || >=98686cd21624c75a043e96812beadddf4f6f48e5 <127a291f4c8069a4e71906938402cacfe24ee8cd || >=98686cd21624c75a043e96812beadddf4f6f48e5 <03b81f015dbb29807ce1ec6d45537d658abdac69 || >=98686cd21624c75a043e96812beadddf4f6f48e5 <7074ec3769820302f1ccf8794a40a6582153b820 || >=98686cd21624c75a043e96812beadddf4f6f48e5 <653c6e289b13cc6942f3e8f8e3c568e70fa42d1fb4bf67cc0871b13103c404b38e332b9d4403a0da, 127a291f4c8069a4e71906938402cacfe24ee8cd, 03b81f015dbb29807ce1ec6d45537d658abdac69, 7074ec3769820302f1ccf8794a40a6582153b820, 653c6e289b13cc6942f3e8f8e3c568e70fa42d1f

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 03b81f015dbb29807ce1ec6d45537d658abdac69; Linux/Linux to b4bf67cc0871b13103c404b38e332b9d4403a0da if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 11, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: validate default EEPROM firmware size The default EEPROM firmware is parsed and copied as a full EEPROM without checking its length. A truncated file can make the driver read beyond the firmware buffer during variant validation or the fallback copy. Reject files shorter than MT7996_EEPROM_SIZE before parsing or copying the firmware.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 27, 2026
References
5 linked sources
Open source record