Commit 4e4b5376 authored by Hannes Frederic Sowa's avatar Hannes Frederic Sowa Committed by David S. Miller
Browse files

netlink: validate addr_len on bind 



Otherwise an out of bounds read could happen.

Signed-off-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9f1e0ad0

net/netlink/af_netlink.c

+3 −0
Original line number Diff line number Diff line
@@ -669,6 +669,9 @@ static int netlink_bind(struct socket *sock, struct sockaddr *addr, 
	struct sockaddr_nl *nladdr = (struct sockaddr_nl *)addr;

	int err;



	if (addr_len < sizeof(struct sockaddr_nl))

		return -EINVAL;



	if (nladdr->nl_family != AF_NETLINK)

		return -EINVAL;