From a0ee18b9b7d3847976c6fb315c06a34fb296de0e Mon Sep 17 00:00:00 2001 From: Thomas Graf Date: Sat, 24 Mar 2007 20:32:54 -0700 Subject: [IPv4] fib: Fix out of bound access of fib_props[] Fixes a typo which caused fib_props[] to have the wrong size and makes sure the value used to index the array which is provided by userspace via netlink is checked to avoid out of bound access. Signed-off-by: Thomas Graf Signed-off-by: David S. Miller --- net/ipv4/fib_frontend.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'net/ipv4/fib_frontend.c') diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index 1fba643..fc920f6 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -493,6 +493,11 @@ static int rtm_to_fib_config(struct sk_buff *skb, struct nlmsghdr *nlh, cfg->fc_nlinfo.pid = NETLINK_CB(skb).pid; cfg->fc_nlinfo.nlh = nlh; + if (cfg->fc_type > RTN_MAX) { + err = -EINVAL; + goto errout; + } + nlmsg_for_each_attr(attr, nlh, sizeof(struct rtmsg), remaining) { switch (attr->nla_type) { case RTA_DST: -- cgit v1.1