diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 35675a1065be841b51868ff32ab94f21953f7f74..f62b5a501566841dc64b776e6b49d6fdad3d083a 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -1321,6 +1321,8 @@ static int isofs_read_inode(struct inode *inode, int relocated)
 
 	de = (struct iso_directory_record *) (bh->b_data + offset);
 	de_len = *(unsigned char *) de;
+	if (de_len < sizeof(struct iso_directory_record))
+		goto fail;
 
 	if (offset + de_len > bufsize) {
 		int frag1 = bufsize - offset;