diff --git a/fs/udf/super.c b/fs/udf/super.c
index 4ea5ad8..0940837 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1303,6 +1303,7 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
 	struct genericPartitionMap *gpm;
 	uint16_t ident;
 	struct buffer_head *bh;
+	unsigned int table_len;
 	int ret = 0;
 
 	bh = udf_read_tagged(sb, block, block, &ident);
@@ -1310,6 +1311,14 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
 		return 1;
 	BUG_ON(ident != TAG_IDENT_LVD);
 	lvd = (struct logicalVolDesc *)bh->b_data;
+	table_len = le32_to_cpu(lvd->mapTableLength);
+	if (sizeof(*lvd) + table_len > sb->s_blocksize) {
+		udf_error(sb, __func__,
+		    "error loading logical volume descriptor: Partition table too long (%u > %lu)\n",
+		    table_len,
+		    sb->s_blocksize - sizeof(*lvd));
+		goto out_bh;
+	}
 
 	i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
 	if (i != 0) {
@@ -1318,7 +1327,7 @@ static int udf_load_logicalvol(struct super_block *sb, sector_t block,
 	}
 
 	for (i = 0, offset = 0;
-	     i < sbi->s_partitions && offset < le32_to_cpu(lvd->mapTableLength);
+	     i < sbi->s_partitions && offset < table_len;
 	     i++, offset += gpm->partitionMapLength) {
 		struct udf_part_map *map = &sbi->s_partmaps[i];
 		gpm = (struct genericPartitionMap *)