Skip to content
Commit dc633700 authored by Zhengchao Shao's avatar Zhengchao Shao Committed by David S. Miller
Browse files

net/af_packet: check len when min_header_len equals to 0



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: default avatar <syzbot+5ea725c25d06fb9114c4@syzkaller.appspotmail.com>
Fixes: fd189422 ("bpf: Don't redirect packets with invalid pkt_len")
Signed-off-by: default avatarZhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3b1c3147
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment