libblkid: (udf) fix possible null pointer dereference [coverity scan]

Signed-off-by: Karel Zak <kzak@redhat.com>
2013-03-27 16:02:07 +01:00 · 2013-03-27 16:02:07 +01:00 · 6acde8a3b1
parent b3eff5dd74
commit 6acde8a3b1
1 changed files with 2 additions and 1 deletions
--- a/libblkid/src/superblocks/udf.c
+++ b/libblkid/src/superblocks/udf.c
@ -154,7 +154,8 @@ real_blksz:
 			blkid_probe_get_buffer(pr,
 					(blkid_loff_t) (loc + b) * bs,
 					sizeof(*vd));
-
+		if (!vd)
+			return -1;
 		type = le16_to_cpu(vd->tag.id);
 		if (type == 0)
 			break;