From 3ebbe0cdd41f62e5c79cb4d7aa42a1ca50d7d2f2 Mon Sep 17 00:00:00 2001 From: Yasuyuki Kozakai Date: Mon, 5 Dec 2005 13:33:26 -0800 Subject: [PATCH] [NETFILTER]: nfnetlink: Fix calculation of minimum message length At least, valid nfnetlink message should have nlmsghdr and nfgenmsg. Signed-off-by: Yasuyuki Kozakai Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- net/netfilter/nfnetlink.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index a60c59b976..95fdf04f1d 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -162,7 +162,7 @@ nfnetlink_check_attributes(struct nfnetlink_subsystem *subsys, return -EINVAL; } - min_len = NLMSG_ALIGN(sizeof(struct nfgenmsg)); + min_len = NLMSG_SPACE(sizeof(struct nfgenmsg)); if (unlikely(nlh->nlmsg_len < min_len)) return -EINVAL; @@ -236,8 +236,7 @@ static inline int nfnetlink_rcv_msg(struct sk_buff *skb, } /* All the messages must at least contain nfgenmsg */ - if (nlh->nlmsg_len < - NLMSG_LENGTH(NLMSG_ALIGN(sizeof(struct nfgenmsg)))) { + if (nlh->nlmsg_len < NLMSG_SPACE(sizeof(struct nfgenmsg))) { DEBUGP("received message was too short\n"); return 0; } -- 2.39.5