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-rw-r--r--net/x25/af_x25.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index aa567b09ea9a..5f03e4ea65bf 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -295,7 +295,8 @@ static struct sock *x25_find_listener(struct x25_address *addr,
* Found a listening socket, now check the incoming
* call user data vs this sockets call user data
*/
- if(skb->len > 0 && x25_sk(s)->cudmatchlength > 0) {
+ if (x25_sk(s)->cudmatchlength > 0 &&
+ skb->len >= x25_sk(s)->cudmatchlength) {
if((memcmp(x25_sk(s)->calluserdata.cuddata,
skb->data,
x25_sk(s)->cudmatchlength)) == 0) {