base64_decode: fix potential keyword parsing issue (CID 1340064)

diff --git a/src/detect-base64-decode.c b/src/detect-base64-decode.c
index bd9baea583ba9a107995ec4b9ae39b46bf7a6602..e06e6f870c28b20366ccb2b2f98f5a1c161851b7 100644 (file)
--- a/src/detect-base64-decode.c
+++ b/src/detect-base64-decode.c
@@ -310,6 +310,9 @@ static int DetectBase64DecodeSetup(DetectEngineCtx *de_ctx, Signature *s,
         }
         else {
             sm_list = SigMatchListSMBelongsTo(s, pm);
+            if (sm_list < 0) {
+                goto error;
+            }
         }
     }