diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index 0c35e62f108d..9352487bd0fc 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -202,7 +202,8 @@ static void *cramfs_blkdev_read(struct super_block *sb, unsigned int offset,
 			continue;
 		blk_offset = (blocknr - buffer_blocknr[i]) << PAGE_SHIFT;
 		blk_offset += offset;
-		if (blk_offset + len > BUFFER_SIZE)
+		if (blk_offset > BUFFER_SIZE ||
+		    blk_offset + len > BUFFER_SIZE)
 			continue;
 		return read_buffers[i] + blk_offset;
 	}
@@ -872,8 +873,8 @@ static int cramfs_readpage(struct file *file, struct page *page)
 			if (unlikely(block_start & CRAMFS_BLK_FLAG_DIRECT_PTR)) {
 				/* See comments on earlier code. */
 				u32 prev_start = block_start;
-			       block_start = prev_start & ~CRAMFS_BLK_FLAGS;
-			       block_start <<= CRAMFS_BLK_DIRECT_PTR_SHIFT;
+				block_start = prev_start & ~CRAMFS_BLK_FLAGS;
+				block_start <<= CRAMFS_BLK_DIRECT_PTR_SHIFT;
 				if (prev_start & CRAMFS_BLK_FLAG_UNCOMPRESSED) {
 					block_start += PAGE_SIZE;
 				} else {