From: Karel Zak <kzak@redhat.com>
Date: Thu, 2 Jun 2022 14:02:54 +0000 (+0200)
Subject: libblkid: (hfs) fix make sure buffer is large enough
X-Git-Tag: v2.39-rc1~643
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7ebfe9b411c12223a2500ca62d6be37c48e2d83d;p=thirdparty%2Futil-linux.git

libblkid: (hfs) fix make sure buffer is large enough

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/libblkid/src/superblocks/ntfs.c b/libblkid/src/superblocks/ntfs.c
index 9f1927cf74..b5799c3e33 100644
--- a/libblkid/src/superblocks/ntfs.c
+++ b/libblkid/src/superblocks/ntfs.c
@@ -158,6 +158,9 @@ static int __probe_ntfs(blkid_probe pr, const struct blkid_idmag *mag, int save_
 			sectors_per_cluster, nr_clusters,
 			off));
 
+	if (mft_record_size < 4)
+		return 1;
+
 	buf_mft = blkid_probe_get_buffer(pr, off, mft_record_size);
 	if (!buf_mft)
 		return errno ? -errno : 1;