diff --git a/sys/fs/cd9660/cd9660_vnops.c b/sys/fs/cd9660/cd9660_vnops.c
--- a/sys/fs/cd9660/cd9660_vnops.c
+++ b/sys/fs/cd9660/cd9660_vnops.c
@@ -120,7 +120,7 @@
 	struct vnode *vp = ap->a_vp;
 	struct iso_node *ip = VTOI(vp);
 	accmode_t accmode = ap->a_accmode;
-	accmode_t file_mode;
+	accmode_t file_mode, mask;
 	uid_t uid;
 	gid_t gid;
 
@@ -144,8 +144,9 @@
 		}
 	}
 
-	file_mode = ip->inode.iso_mode;
-	file_mode &= (vp->v_type == VDIR) ? ip->i_mnt->im_dmask : ip->i_mnt->im_fmask;
+	mask = (ALLPERMS & ~ACCESSPERMS) |
+	    (vp->v_type == VDIR ? ip->i_mnt->im_dmask : ip->i_mnt->im_fmask);
+	file_mode = ip->inode.iso_mode & mask;
 
 	uid = (ip->i_mnt->im_flags & ISOFSMNT_UID) ?
 		ip->i_mnt->im_uid : ip->inode.iso_uid;
@@ -176,12 +177,14 @@
 	struct vnode *vp = ap->a_vp;
 	struct vattr *vap = ap->a_vap;
 	struct iso_node *ip = VTOI(vp);
+	mode_t mask;
 
 	vap->va_fsid    = dev2udev(ip->i_mnt->im_dev);
 	vap->va_fileid	= ip->i_number;
 
-	vap->va_mode	= ip->inode.iso_mode;
-	vap->va_mode &= (vp->v_type == VDIR) ? ip->i_mnt->im_dmask : ip->i_mnt->im_fmask;
+	mask = (ALLPERMS & ~ACCESSPERMS) |
+	    (vp->v_type == VDIR ? ip->i_mnt->im_dmask : ip->i_mnt->im_fmask);
+	vap->va_mode	= ip->inode.iso_mode & mask;
 
 	vap->va_nlink	= ip->inode.iso_links;
 	vap->va_uid	= (ip->i_mnt->im_flags & ISOFSMNT_UID) ?