memory corruption in X.25 facilities parsing

Signed-of-by: Andrew Hendry <andrew.hendry@gmail.com>

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/net/x25/x25_in.c b/net/x25/x25_in.c
index 63178961efac..f729f022be69 100644
--- a/net/x25/x25_in.c
+++ b/net/x25/x25_in.c
@@ -119,6 +119,8 @@ static int x25_state1_machine(struct sock *sk, struct sk_buff *skb, int frametyp
                                                 &x25->vc_facil_mask);
                         if (len > 0)
                                 skb_pull(skb, len);
+                        else
+                                return -1;
                         /*
                          *      Copy any Call User Data.
                          */