CVE-2026-74324
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7925: validate skb length in testmode query
In mt7925_tm_query(), the response skb from mt76_mcu_send_and_get_msg()
is used in a memcpy without validating its length:
memcpy(evt_resp, skb->data + 8, MT7925_EVT_RSP_LEN);
where MT7925_EVT_RSP_LEN is 512. If the firmware returns a response
shorter than 520 bytes (8 + 512), this reads beyond the skb data
buffer. The over-read data is then returned to userspace via nla_put()
in mt7925_testmode_dump().
Add a length check before the memcpy to ensure the skb contains
sufficient data.
https://git.kernel.org/stable/c/c386e90a7ce8ddec9f038e9437661a2821b0ce89
https://git.kernel.org/stable/c/c7369a00860a0704461d440e7c3bf9b49bfdbaee
https://git.kernel.org/stable/c/e8b214b6d6e1902025452db0a0af73dc9693e4ba