tree 6bb60df5f3e01eea3ee4126b1df532b5dcfed750
parent 0ca2635b418cdc1d47091a85f6f4bda46b8da264
author Willem de Bruijn <willemb@google.com> 1545412019 -0500
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1547047000 +0100

packet: validate address length

[ Upstream commit 99137b7888f4058087895d035d81c6b2d31015c5 ]

Packet sockets with SOCK_DGRAM may pass an address for use in
dev_hard_header. Ensure that it is of sufficient length.

Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>