From 85899e359ee7c4e615477b82b8b1d5c6f258d792 Mon Sep 17 00:00:00 2001
From: Moti Cohen <moti.cohen@redis.com>
Date: Tue, 19 Apr 2022 06:04:10 +0300
Subject: [PATCH] Fix sdsConfigRewrite() to prevent freeing invalid
 memory(#10598)

---
 src/config.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/config.c b/src/config.c
index cb3ff2e45e..5ebf381c84 100644
--- a/src/config.c
+++ b/src/config.c
@@ -1848,7 +1848,7 @@ static sds sdsConfigGet(standardConfig *config) {
 static void sdsConfigRewrite(standardConfig *config, const char *name, struct rewriteConfigState *state) {
     sds val = config->flags & MODULE_CONFIG ? getModuleStringConfig(config->privdata) : *config->data.sds.config;
     rewriteConfigSdsOption(state, name, val, config->data.sds.default_value);
-    if (val) sdsfree(val);
+    if ((val) && (config->flags & MODULE_CONFIG)) sdsfree(val);
 }