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(parent: fd6ad75) | patch
net: usb: smsc75xx: Limit packet length to skb->len
authorSzymon Heidrich <szymon.heidrich@gmail.com>
Mon, 13 Mar 2023 22:00:45 +0000 (23:00 +0100)
committerDavid S. Miller <davem@davemloft.net>
Wed, 15 Mar 2023 08:52:53 +0000 (08:52 +0000)
commitd8b228318935044dafe3a5bc07ee71a1f1424b8d
treec705010af6c28753981e5db7a8598b3625a0f309tree | snapshot
parentfd6ad75f8c008925e279576dc749ad12aa3fb64bcommit | diff
net: usb: smsc75xx: Limit packet length to skb->len

Packet length retrieved from skb data may be larger than
the actual socket buffer length (up to 9026 bytes). In such
case the cloned skb passed up the network stack will leak
kernel memory contents.

Fixes: d0cad871703b ("smsc75xx: SMSC LAN75xx USB gigabit ethernet adapter driver")
Signed-off-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/usb/smsc75xx.c diff | blob | history
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