Commit 4e4b5376 authored Dec 15, 2012 by Hannes Frederic Sowa Committed by David S. Miller Dec 17, 2012

netlink: validate addr_len on bind



Otherwise an out of bounds read could happen.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David 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;