Fix NULL dereference in PacketPatternSearchWithStreamCtx code.

14 years ago · 8e48a2edfd
parent 34b3f19465
commit 8e48a2edfd
1 changed files with 2 additions and 2 deletions
--- a/src/detect-engine-mpm.c
+++ b/src/detect-engine-mpm.c
@ -172,11 +172,11 @@ uint32_t PacketPatternSearchWithStreamCtx(DetectEngineThreadCtx *det_ctx,

    uint32_t ret;

-    if (p->flowflags & FLOW_PKT_TOSERVER) {
+    if (p->flowflags & FLOW_PKT_TOSERVER && det_ctx->sgh->mpm_stream_ctx_ts != NULL) {
        ret = mpm_table[det_ctx->sgh->mpm_stream_ctx_ts->mpm_type].
            Search(det_ctx->sgh->mpm_stream_ctx_ts, &det_ctx->mtc, &det_ctx->pmq,
                   p->payload, p->payload_len);
-    } else {
+    } else if (p->flowflags & FLOW_PKT_TOCLIENT && det_ctx->sgh->mpm_stream_ctx_tc != NULL) {
        ret = mpm_table[det_ctx->sgh->mpm_stream_ctx_tc->mpm_type].
            Search(det_ctx->sgh->mpm_stream_ctx_tc, &det_ctx->mtc, &det_ctx->pmq,
                   p->payload, p->payload_len);