packet: validate address length if non-zero
authorWillem de Bruijn <willemb@google.com>
Sat, 22 Dec 2018 21:53:45 +0000 (16:53 -0500)
committerDavid S. Miller <davem@davemloft.net>
Sat, 22 Dec 2018 23:12:04 +0000 (15:12 -0800)
commit6b8d95f1795c42161dc0984b6863e95d6acf24ed
tree8288508ee59a916d28fe8786dcc93081eea3f1c9
parenta95386f0390ab602904d11fe6bd7ea5ef9b136f8
packet: validate address length if non-zero

Validate packet socket address length if a length is given. Zero
length is equivalent to not setting an address.

Fixes: 99137b7888f4 ("packet: validate address length")
Reported-by: Ido Schimmel <idosch@idosch.org>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/packet/af_packet.c