[PATCH net-next v3 2/4] netfilter: nf_conntrack_irc: use nf_ct_helper_parse_port()

[HACKE-RC]

Replace simple_strtoul() with the new nf_ct_helper_parse_port() helper.
This removes the dependency on NUL-terminated strings and adds an
explicit port range check, rejecting port 0 and values above 65535.

Fixes: 869f37d8e48f ("netfilter: nf_conntrack_irc - Fix uninitialised variable warning")
Signed-off-by: HACKE-RC <rc@xxxxxxxxx>
---
 net/netfilter/nf_conntrack_irc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/netfilter/nf_conntrack_irc.c b/net/netfilter/nf_conntrack_irc.c
index 522183b9a..1b51f5a6a 100644
--- a/net/netfilter/nf_conntrack_irc.c
+++ b/net/netfilter/nf_conntrack_irc.c
@@ -93,7 +93,9 @@ static int parse_dcc(char *data, const char *data_end, __be32 *ip,
 		data++;
 	}
 
-	*port = simple_strtoul(data, &data, 10);
+	if (nf_ct_helper_parse_port(data, data_end - data, port, &data))
+		return -1;
+
 	*ad_end_p = data;
 
 	return 0;
-- 
2.54.0