detect: forbids unsupported prefilters

diff --git a/src/detect-prefilter.c b/src/detect-prefilter.c
index 4aab7c16551665ce704ecf52305fd6384efa6317..d91edcb17f3da5dd34be5553c63ded04af834354 100644 (file)
--- a/src/detect-prefilter.c
+++ b/src/detect-prefilter.c
@@ -71,6 +71,11 @@ static int DetectPrefilterSetup (DetectEngineCtx *de_ctx, Signature *s, const ch
         SCLogError(SC_ERR_INVALID_SIGNATURE, "prefilter needs preceding match");
         SCReturnInt(-1);
     }
+    if (sigmatch_table[sm->type].SupportsPrefilter == NULL) {
+        SCLogError(SC_ERR_INVALID_SIGNATURE, "prefilter is not supported for %s",
+                sigmatch_table[sm->type].name);
+        SCReturnInt(-1);
+    }
 
     s->init_data->prefilter_sm = sm;