# CVE-2026-80933

## Summary

- **CVE ID:** CVE-2026-80933
- **Severity:** HIGH
- **CVSS Score:** 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** N/A
- **Published:** Sep 11, 2026
- **Last Modified:** Sep 14, 2026

## 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.

## Affected Products

- Linux — Linux (98686cd21624c75a043e96812beadddf4f6f48e5)
- Linux — Linux (6.2)
- Linux — Linux (0)
- Linux — Linux (6.18.50)
- Linux — Linux (7.2.4)
- Linux — Linux (7.3-rc1)
- Linux — Linux (6.6.157)
- Linux — Linux (6.12.110)

## References

- [CNA](https://git.kernel.org/stable/c/03b81f015dbb29807ce1ec6d45537d658abdac69)
- [CNA](https://git.kernel.org/stable/c/7074ec3769820302f1ccf8794a40a6582153b820)
- [CNA](https://git.kernel.org/stable/c/653c6e289b13cc6942f3e8f8e3c568e70fa42d1f)
- [CNA](https://git.kernel.org/stable/c/b4bf67cc0871b13103c404b38e332b9d4403a0da)
- [CNA](https://git.kernel.org/stable/c/127a291f4c8069a4e71906938402cacfe24ee8cd)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.13%
- **EPSS Percentile:** 2.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._