---
title: "CVE-2026-80935: Linux Kernel mt76 - Out-of-Bounds Write"
description: "Linux kernel mt76 mt7996 contains an out-of-bounds write vulnerability caused by unbounded device EEPROM address in mt7996_mcu_get_eeprom(), letting malicious devices write beyond eeprom.data, exploit requires malicious or malfunctioning device."
url: https://panop.io/threat-heartbeat/CVE-2026-80935/
---

# CVE-2026-80935 Linux Kernel mt76 - Out-of-Bounds Write

Linux kernel mt76 mt7996 contains an out-of-bounds write vulnerability caused by unbounded device EEPROM address in mt7996\_mcu\_get\_eeprom(), letting malicious devices write beyond eeprom.data, exploit requires malicious or malfunctioning device.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.38% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-80935)

## Details

Type

Out-of-Bounds Write

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

11 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-80935](https://nvd.nist.gov/vuln/detail/CVE-2026-80935)
- [https://git.kernel.org/stable/c/13b3c29a782033ce4a230be9e5618032813dbcd4](https://git.kernel.org/stable/c/13b3c29a782033ce4a230be9e5618032813dbcd4)
- [https://git.kernel.org/stable/c/6be59da2063d5b3522bfde8aae0487ec095eb384](https://git.kernel.org/stable/c/6be59da2063d5b3522bfde8aae0487ec095eb384)
- [https://git.kernel.org/stable/c/9e5abb5e2ade0b6fd0e47209711115d47a255176](https://git.kernel.org/stable/c/9e5abb5e2ade0b6fd0e47209711115d47a255176)
- [https://git.kernel.org/stable/c/388f471ca4758f644394b681ce97677a4d0e772c](https://git.kernel.org/stable/c/388f471ca4758f644394b681ce97677a4d0e772c)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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