Zhengchao Shao facf99bc3a net/af_packet: check len when min_header_len equals to 0 ...

commit dc633700f0 upstream.

User can use AF_PACKET socket to send packets with the length of 0.
When min_header_len equals to 0, packet_snd will call __dev_queue_xmit
to send packets, and sock->type can be any type.

Reported-by: syzbot+5ea725c25d06fb9114c4@syzkaller.appspotmail.com
Fixes: fd18942244 ("bpf: Don't redirect packets with invalid pkt_len")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-09-05 10:30:12 +02:00

..

af_packet.c

net/af_packet: check len when min_header_len equals to 0

2022-09-05 10:30:12 +02:00

diag.c

…

internal.h

…

Kconfig

…

Makefile

…