fs: Disable many filesystems under lockdown

fs: Disable many filesystems under lockdown

The idea is to permit the following: btrfs, cpio, exfat, ext, f2fs, fat,
hfsplus, iso9660, squash4, tar, xfs and zfs.

The JFS, ReiserFS, romfs, UDF and UFS security vulnerabilities were
reported by Jonathan Bar Or <jonathanbaror@gmail.com>.

Fixes: CVE-2025-0677
Fixes: CVE-2025-0684
Fixes: CVE-2025-0685
Fixes: CVE-2025-0686
Fixes: CVE-2025-0689
Suggested-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Gbp-Pq: Topic cve-2025-jan
Gbp-Pq: Name fs-Disable-many-filesystems-under-lockdown.patch