From: Shiji Yang <yangshiji66@outlook.com>
Date: Fri, 25 Jul 2025 00:20:45 +0000 (+0800)
Subject: env: mtd: initialize saved_buf pointer
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e842bd33154946052068195df3446635236d3d9;p=thirdparty%2Fu-boot.git

env: mtd: initialize saved_buf pointer

When sect_size is greater than the CONFIG_ENV_SIZE, this wild
pointer will cause CPU halt or system crash.

Fixes: 03fb08d4aef8 ("env: Introduce support for MTD")
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
---

diff --git a/env/mtd.c b/env/mtd.c
index ad263ed4b29..b26ee80985a 100644
--- a/env/mtd.c
+++ b/env/mtd.c
@@ -201,7 +201,7 @@ static int env_mtd_erase(void)
 {
 	struct mtd_info *mtd_env;
 	u32 sect_size, sect_num;
-	char *saved_buf, *tmp;
+	char *saved_buf = NULL, *tmp;
 	struct erase_info ei;
 	size_t ret_len;
 	int remaining;