[NETLINK] Check for correct bind parameters Before this change it was possible to pass less than sockaddr_nl bytes, which might lead to arbitrary data being accessed in netlink_bind(). Signed-off-by: Holger Eitzenberger --- commit 53ba94ab22cc3338d915d684ba1012fa0419ff14 tree 3a1b1dc6cb5dacac99722b9f96fe3ba4b2d29bde parent f695baf2df9e0413d3521661070103711545207a author Holger Eitzenberger Mon, 17 Sep 2007 22:15:37 +0200 committer Holger Eitzenberger Mon, 17 Sep 2007 22:15:37 +0200 net/netlink/af_netlink.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 5681ce3..425543d 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -598,6 +598,9 @@ static int netlink_bind(struct socket *sock, struct sockaddr *addr, int addr_len struct sockaddr_nl *nladdr = (struct sockaddr_nl *)addr; int err; + if (addr < sizeof(struct sockaddr_nl)) + return -EINVAL; + if (nladdr->nl_family != AF_NETLINK) return -EINVAL;