RPM 4.18 contains various improvements over previous versions, but in particular this release addresses a whole class of symlink handling related security issues, some with CVEs, from 2021. Other notable improvements include:
A more intuitive conditional builds macro
A more robust and secure
Weak dependencies accept qualifiers like
New interactive shell for working with macros (
rpmspec --shell) and embedded Lua (
%confspec section for build configuration
rpmuncompresscli tool simplifies unpacking multiple sources
Numerous macro improvements and fixes
Numerous OpenPGP parser correctness and security fixes
For more detailed information see the upstream RPM 4.18 Release Notes.
On a Fedora system you booted from an image without the fully populated
/etc/ directory (First Boot),
systemd will execute an equivalent of the
systemctl preset-all command. As a result, units will be enabled or disabled according to the preset configuration.
You can use the
systemctl preset-all command at any time to apply the preset configuration. If you did not make any prior local changes to the configuration, the command would make no changes to unit state. If you enabled or disabled some units, the command would return unit enablement to the after-installation pristine state.
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