[PATCH 1/1] efi_loader: fix device path to text protocol

[Heinrich Schuchardt]

File device path nodes may contain non-ASCII characters. Correctly
truncate the text if it does not fit into the buffer.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
 lib/efi_loader/efi_device_path_to_text.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/lib/efi_loader/efi_device_path_to_text.c b/lib/efi_loader/efi_device_path_to_text.c
index d8a83c8849..805add7268 100644
--- a/lib/efi_loader/efi_device_path_to_text.c
+++ b/lib/efi_loader/efi_device_path_to_text.c
@@ -292,10 +292,7 @@ static char *dp_media(char *s, struct efi_device_path *dp)
 	case DEVICE_PATH_SUB_TYPE_FILE_PATH: {
 		struct efi_device_path_file_path *fp =
 			(struct efi_device_path_file_path *)dp;
-		int slen = (dp->length - sizeof(*dp)) / 2;
-		if (slen > MAX_NODE_LEN - 2)
-			slen = MAX_NODE_LEN - 2;
-		s += sprintf(s, "%-.*ls", slen, fp->str);
+		s += snprintf(s, MAX_NODE_LEN, "%ls", fp->str);
 		break;
 	}
 	default:
-- 
2.33.1