[U-Boot] [PATCH 1/1] disk: efi: buffer overflow in part_get_info_efi()

[Heinrich Schuchardt]

In part_get_info_efi() we use the output of print_efiname() to set
info->name[]. The size of info->name is PART_NAME_LEN = 32 but
print_efiname() returns a string with a maximum length of
PARTNAME_SZ + 1 = 37.

Use snprintf() instead of sprintf() to avoid buffer overflow.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
 disk/part_efi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/disk/part_efi.c b/disk/part_efi.c
index c0fa753339..8626d4ee7b 100644
--- a/disk/part_efi.c
+++ b/disk/part_efi.c
@@ -313,7 +313,7 @@ int part_get_info_efi(struct blk_desc *dev_desc, int part,
 		     - info->start;
 	info->blksz = dev_desc->blksz;

-	sprintf((char *)info->name, "%s",
+	snprintf((char *)info->name, sizeof(info->name), "%s",
 			print_efiname(&gpt_pte[part - 1]));
 	strcpy((char *)info->type, "U-Boot");
 	info->bootable = is_bootable(&gpt_pte[part - 1]);
--
2.20.1