What’s Vulnerable › Vulnerabilities

CVE-2026-80937: wifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-11 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: bound the device EEPROM address before the EFUSE copy mt7915_mcu_get_eeprom() copies a fixed EFUSE block into the driver's dev->mt76.eeprom.data buffer at the offset reported by the MCU response (res->addr, a device-controlled __le32) without checking it against the buffer size. A malicious or malfunctioning device can report an arbitrary address and drive a 16-byte out-of-bounds write past eeprom.data. Reject a response whose address would place the copy outside eeprom.data before deriving the destination pointer. Devices that echo the requested in-bounds offset are unaffected.

Affected products

• Linux: 5.8 — fixed in 7.3

How to fix

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

References

• https://git.kernel.org/stable/c/394e8cb56fc732d71041599cdb4e01f82cfd11c5
• https://git.kernel.org/stable/c/44b5adfe49499f53002737f5fe81d608c08122fc
• https://git.kernel.org/stable/c/5f48b0d752a76590e2c613aae5345c2474627d1b
• https://git.kernel.org/stable/c/5fdaf7016d7684ef756a229fd5d96b4a140eeb40
• https://git.kernel.org/stable/c/d6774f6af3711143a93281904a928a78652c8b7e
• https://git.kernel.org/stable/c/ef10a2ec2a74c4a6aa5c086fc0c2b01037569134

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