What happened
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 versions
Linux: e57b7901469fc0b021930b83a8094baaf3d81b09 through before 5fdaf7016d7684ef756a229fd5d96b4a140eeb40 (git); e57b7901469fc0b021930b83a8094baaf3d81b09 through before 5f48b0d752a76590e2c613aae5345c2474627d1b (git); e57b7901469fc0b021930b83a8094baaf3d81b09 through before 44b5adfe49499f53002737f5fe81d608c08122fc (git); 5.8 Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.