From 49d9f4116bcb93c5676b8c40c441aee8efbd4645 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Tue, 11 Dec 2018 13:18:52 +0100
Subject: [PATCH] Fix stringmatchlen() read past buffer bug.

See #5632.
---
 src/util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/util.c b/src/util.c
index 36cbc43d3..feb443c10 100644
--- a/src/util.c
+++ b/src/util.c
@@ -47,7 +47,7 @@
 int stringmatchlen(const char *pattern, int patternLen,
         const char *string, int stringLen, int nocase)
 {
-    while(patternLen) {
+    while(patternLen && stringLen) {
         switch(pattern[0]) {
         case '*':
             while (pattern[1] == '*') {