CVE-2026-31623
net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()
In the Linux kernel, the following vulnerability has been resolved:
net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()
A malicious USB device claiming to be a CDC Phonet modem can overflow
the skb_shared_info->frags[] array by sending an unbounded sequence of
full-page bulk transfers.
Drop the skb and increment the length error when the frag limit is
reached. This matches the same fix that commit f0813bcd2d9d ("net:
wwan: t7xx: fix potential skb->frags overflow in RX path") did for the
t7xx driver.
Productos afectados
Linux · Linux¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →Referencias
https://git.kernel.org/stable/c/0c5c65a17db729fc63ab656bdaaf0e675a9dbeachttps://git.kernel.org/stable/c/600dc40554dc5ad1e6f3af51f700228033f43ea7https://git.kernel.org/stable/c/6053620fdbcd89fa7e755644efdaab78e0daaae7https://git.kernel.org/stable/c/6807ff49bf796b3823b1e29f97b69316a40a9a94https://git.kernel.org/stable/c/9989938d13cc5ba8447eeed5a61acfcf61bc6801https://git.kernel.org/stable/c/a23b1b1aaf41e174181d5853a70e65d4d01e648chttps://git.kernel.org/stable/c/c183d5775129a0a7495bd61a6e57ec230dcf01e5https://git.kernel.org/stable/c/d4e1946bea8d6441835eb3fd09b19237ba366a6fhttps://git.kernel.org/stable/c/ebf75c6301c4972a87542ebf2d994c6391eb5d46