From bc8d837b72aa226ac1b0c4e112ad08ed8da6d0d3 Mon Sep 17 00:00:00 2001
From: zhangtaoXT5 <50564994+zhangtaoXT5@users.noreply.github.com>
Date: Fri, 2 Sep 2022 04:45:28 +0800
Subject: [PATCH] fix heap-buffer-overflow (#957)
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Prevent incrementing passed a `\0` in our format string.

Co-authored-by: Michael Grunder <michael.grunder@gmail.com>
Co-authored-by: Kristján Valur Jónsson <sweskman@gmail.com>
---
 hiredis.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hiredis.c b/hiredis.c
index c0968ed..a3b3edd 100644
--- a/hiredis.c
+++ b/hiredis.c
@@ -485,6 +485,8 @@ int redisvFormatCommand(char **target, const char *format, va_list ap) {
 
             touched = 1;
             c++;
+            if (*c == '\0')
+                break;
         }
         c++;
     }