runc v1.3.0 -- "Mr. President, we must not allow a mine shaft gap!"

This is the first release of the 1.3.z release branch of runc. It
contains a few minor fixes for issues found in 1.3.0-rc.2.

This is the first release of runc that will follow our new release and
support policy (see RELEASES.md for more details). This means that, as
of this release:

• As of this release, the runc 1.2.z release branch will now only
  receive security and "significant" bugfixes.
• Users are encouraged to plan migrating to runc 1.3.0 as soon as
  possible.
• Due to its particular situation, runc 1.1.z is officially no longer
  supported and will no longer receive any updates (not even for
  critical security issues). Users are urged (in the strongest possible
  terms) to upgrade to a supported version of runc.
• Barring any future changes to our release policy, users should expect
  a runc 1.4.0 release in late October 2025.

Fixed

• Removed pre-emptive "full access to cgroups" warning when calling
  runc pause or runc unpause as an unprivileged user without
  --systemd-cgroups. Now the warning is only emitted if an actual permission
  error was encountered. (#4709)
• Several fixes to our CI, mainly related to AlmaLinux and CRIU. (#4670,
  #4728, #4736)

Changed

• In runc 1.2, we changed our mount behaviour to correctly handle clearing
  flags. However, the error messages we returned did not provide as much
  information to users about what clearing flags were conflicting with locked
  mount flags. We now provide more diagnostic information if there is an error
  when in the fallback path to handle locked mount flags. (#4734)
• Upgrade our CI to use golangci-lint v2.0. (#4692)
• runc version information is now filled in using //go:embed rather than
  being set through Makefile. This allows go install or other non-make
  builds to contain the correct version information. Note that
  make EXTRA_VERSION=... still works. (#418)
• Remove exclude directives from our go.mod for broken cilium/ebpf
  versions. v0.17.3 resolved the issue we had, and exclude directives are
  incompatible with go install. (#4748)

Static Linking Notices

The runc binary distributed with this release are statically linked with
the following GNU LGPL-2.1 licensed libraries, with runc acting
as a "work that uses the Library":

• libseccomp

The versions of these libraries were not modified from their upstream versions,
but in order to comply with the LGPL-2.1 (§6(a)), we have attached the
complete source code for those libraries which (when combined with the attached
runc source code) may be used to exercise your rights under the LGPL-2.1.

However we strongly suggest that you make use of your distribution's packages
or download them from the authoritative upstream sources, especially since
these libraries are related to the security of your containers.

---

Thanks to the following contributors for making this release possible:

• Akihiro Suda [email protected]
• Aleksa Sarai [email protected]
• Kir Kolyshkin [email protected]
• Rodrigo Campos [email protected]
• lifubang [email protected]

Signed-off-by: Aleksa Sarai [email protected]