From: Karel Zak <kzak@redhat.com>
Date: Mon, 24 Oct 2022 08:54:24 +0000 (+0200)
Subject: libblkid: (exfat) fix divide by zero [coverity scan]
X-Git-Tag: v2.39-rc1~468
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=48229f8e7f19c1b61a089fc9ede18d417a895454;p=thirdparty%2Futil-linux.git

libblkid: (exfat) fix divide by zero [coverity scan]

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

diff --git a/libblkid/src/superblocks/exfat.c b/libblkid/src/superblocks/exfat.c
index 9d13094251..3986194774 100644
--- a/libblkid/src/superblocks/exfat.c
+++ b/libblkid/src/superblocks/exfat.c
@@ -101,7 +101,7 @@ static struct exfat_entry_label *find_label(blkid_probe pr,
 			return (struct exfat_entry_label *) entry;
 
 		offset += EXFAT_ENTRY_SIZE;
-		if (offset % CLUSTER_SIZE(sb) == 0) {
+		if (CLUSTER_SIZE(sb) && (offset % CLUSTER_SIZE(sb)) == 0) {
 			cluster = next_cluster(pr, sb, cluster);
 			if (cluster < EXFAT_FIRST_DATA_CLUSTER)
 				return NULL;