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(parent: b41dae0) | patch
usbnet: sanity checking of packet sizes and device mtu
authorOliver Neukum <oneukum@suse.com>
Thu, 19 Sep 2019 08:23:08 +0000 (10:23 +0200)
committerDavid S. Miller <davem@davemloft.net>
Thu, 19 Sep 2019 11:27:11 +0000 (13:27 +0200)
commit280ceaed79f18db930c0cc8bb21f6493490bf29c
treeedbf7f8852963bf643f54508afe877c5cec46857tree | snapshot
parentb41dae061bbd722b9d7fa828f35d22035b218e18commit | diff
usbnet: sanity checking of packet sizes and device mtu

After a reset packet sizes and device mtu can change and need
to be reevaluated to calculate queue sizes.
Malicious devices can set this to zero and we divide by it.
Introduce sanity checking.

Reported-and-tested-by: syzbot+6102c120be558c885f04@syzkaller.appspotmail.com
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/usb/usbnet.c diff | blob | history
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