提交 9ea2aa8b 编写于 作者: P Pablo Neira Ayuso

netfilter: nfnetlink: validate nfnetlink header from batch

Make sure there is enough room for the nfnetlink header in the
netlink messages that are part of the batch. There is a similar
check in netlink_rcv_skb().
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
上级 8ca3f5e9
......@@ -321,7 +321,8 @@ static void nfnetlink_rcv_batch(struct sk_buff *skb, struct nlmsghdr *nlh,
nlh = nlmsg_hdr(skb);
err = 0;
if (nlh->nlmsg_len < NLMSG_HDRLEN) {
if (nlmsg_len(nlh) < sizeof(struct nfgenmsg) ||
skb->len < nlh->nlmsg_len) {
err = -EINVAL;
goto ack;
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册