From: Fletcher T. Penney <fletcher@fletcherpenney.net>
Date: Mon, 20 Nov 2017 17:21:39 +0000 (-0500)
Subject: FIXED: Fix potential NULL pointer dereference
X-Git-Tag: 6.2.3^2~1
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ec8bd00a729e3ffd49a2b5845f5ce77e0c3f6d92;p=multimarkdown

FIXED: Fix potential NULL pointer dereference
---

diff --git a/Sources/libMultiMarkdown/mmd.c b/Sources/libMultiMarkdown/mmd.c
index 938be4e..1315254 100644
--- a/Sources/libMultiMarkdown/mmd.c
+++ b/Sources/libMultiMarkdown/mmd.c
@@ -2395,6 +2395,10 @@ char * mmd_d_string_metavalue_for_key(DString * source, const char * key) {
 /// Grab metadata without processing entire document
 /// Returned char * does not need to be freed
 char * mmd_engine_metavalue_for_key(mmd_engine * e, const char * key) {
+	if (e == NULL || key == NULL) {
+		return NULL;
+	}
+	
 	if (e->metadata_stack->size == 0) {
 		// Ensure we have checked for metadata
 		if (!mmd_engine_has_metadata(e, NULL)) {