Comment 58 for bug 10550

Just upgraded to 9.10 Beta and the behavior had definitely changed. Using this line in my /etc/fstab now makes problematic DVDs behave properly.

/dev/scd0 /media/cdrom0 udf,iso9660 users,noauto,uid=0,gid=46,mode=0777,dmode=0777,nosuid,noexec 0 0

The old line (default from Ubuntu install) was

/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0

Apparently the patch has been released. Many thanks to all involved.