The length of configured MTDPARTS_DEFAULT string
could be greater than console printbuffer size.
Replace printf() by puts() to avoid potential buffer
overflows.
Signed-off-by: Anatolij Gustschin <ag...@denx.de>
---
Changes since v2:
- add comment explaining the reason for usage of puts().
Changes since v1:
- use puts() instead of printf() as suggested by Wolfgang.
common/cmd_mtdparts.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/common/cmd_mtdparts.c b/common/cmd_mtdparts.c
index b375fea..20fed2a 100644
--- a/common/cmd_mtdparts.c
+++ b/common/cmd_mtdparts.c
@@ -1254,8 +1254,14 @@ static void list_partitions(void)
printf("\ndefaults:\n");
printf("mtdids : %s\n",
mtdids_default ? mtdids_default : "none");
- printf("mtdparts: %s\n",
- mtdparts_default ? mtdparts_default : "none");
+ /*
+ * Using printf() here results in printbuffer overflow
+ * if default mtdparts string is greater than console
+ * printbuffer. Use puts() to prevent system crashes.
+ */
+ puts("mtdparts: ");
+ puts(mtdparts_default ? mtdparts_default : "none");
+ puts("\n");
}
/**
--
1.6.3.3
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