CVE-2026-80935
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: bound the device EEPROM address before the EFUSE copy mt7996_mcu_get_eeprom() derives the destination of the EFUSE/EXT block copy from the address reported by the MCU response (event->addr, a device-controlled __le32) and clamps only the copy length, never the destination offset into dev->mt76.eeprom.data. A malicious or malfunctioning device can report an arbitrary address and drive an out-of-bounds write of up to MT7996_EXT_EEPROM_BLOCK_SIZE bytes 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.
- Score
- CVSS 3.1 8.8 High
- Status
- Received - 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- Published
- 2026-09-11
- Last modified
- 2026-10-21
Affected products
References
- https://git.kernel.org/stable/c/4892be1ef0bbe6db6b13bf46cb79b6706bb5b214
- https://git.kernel.org/stable/c/388f471ca4758f644394b681ce97677a4d0e772c
- https://git.kernel.org/stable/c/9e5abb5e2ade0b6fd0e47209711115d47a255176
- https://git.kernel.org/stable/c/6be59da2063d5b3522bfde8aae0487ec095eb384
- https://git.kernel.org/stable/c/13b3c29a782033ce4a230be9e5618032813dbcd4
