Buffer Overflow Risk in Linux Kernel Affecting Wireless Connectivity by Vendor

CVE-2026-80825

What is CVE-2026-80825?

A critical issue in the Linux kernel's mt7925 driver can lead to system instability when forwarding frames. The function mt7925_usb_sdio_tx_prepare_skb does not ensure sufficient headroom for USB headers while processing transmitted packets from bridged interfaces. This oversight can trigger kernel panic under specific conditions, particularly when bridging wired connections to mt7925-based APs. Previous adjustments made for similar drivers highlight the need for rigorous verification of buffer sizes to prevent these failures. This vulnerability poses a risk for users relying on devices that integrate the mt7925 chip, especially in complex network environments.

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