cmark

My personal build of CMark ✏️

git clone: git://git.pablopie.xyz/cmark
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Commit: 1f09bfd091eeedbf4ff27e519201ee2c428710c1
Parent: 242e277a661ec7e51f34dcaf86c1925d550b1498
Author: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Sat, 25 Jan 2020 10:49:59 +0100

Fix null pointer deref in is_autolink

Introduced by a recent commit. Found by OSS-Fuzz.

Diffstat

1 file changed, 2 insertions, 1 deletion

Status	File Name	N° Changes	Insertions	Deletions
Modified	src/commonmark.c	3	2	1

diff --git a/src/commonmark.c b/src/commonmark.c
@@ -146,7 +146,8 @@ static bool is_autolink(cmark_node *node) {
   if (strcmp((const char *)url, "mailto:") == 0) {
     url += 7;
   }
-  return strcmp((const char *)url, (char *)link_text->data) == 0;
+  return link_text->data != NULL &&
+         strcmp((const char *)url, (char *)link_text->data) == 0;
 }
 
 // if node is a block node, returns node.