What’s Vulnerable › Vulnerabilities

CVE-2026-80933: wifi: mt76: mt7996: validate default EEPROM firmware size

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-11 · updated 2026-10-19

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 kernel: 6.2 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/03b81f015dbb29807ce1ec6d45537d658abdac69
• https://git.kernel.org/stable/c/127a291f4c8069a4e71906938402cacfe24ee8cd
• https://git.kernel.org/stable/c/653c6e289b13cc6942f3e8f8e3c568e70fa42d1f
• https://git.kernel.org/stable/c/7074ec3769820302f1ccf8794a40a6582153b820
• https://git.kernel.org/stable/c/b4bf67cc0871b13103c404b38e332b9d4403a0da

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