LXC 5.0.3 LTS has been released


The LXC team is pleased to announce the release of LXC 5.0.3!

This is the third bugfix release for LXC 5.0 which is supported until June 2027.


As usual this bugfix releases focus on stability and hardening.

Some of the highlights for this release are:

  • Fix nftables syntax for IPv6 NAT
  • Added support for squashfs OCI images
  • Fixes when running LXC with io_uring

The full list of commits is available below:

Detailed changelog
  • drop broken lxc-test-fuzzers
  • Fix typo: bev_type → bdev_type
  • Fix strlcat’s return value checks
  • lxc-net.in: fix nftables syntax for IPv6 NAT
  • initutils: use PRIu64 for uint64_t in setproctitle
  • apparmor: don’t try to mmap empty files
  • Add support for squashfs images in oci via atomfs
  • Allow fuse mounts in apparmor start-container.
  • tree-wide: convert fcntl(FD_CLOEXEC) to SOCK_CLOEXEC
  • console-log test: make sure container is stopped before restarting
  • make setproctitle()'s /proc/pid/stat parsing safe
  • setproctitle(): Handle potential NULL return from strrchr()
  • file_utils: rename fd_make_nonblocking to fd_make_blocking
  • file_utils: add fd_make_nonblocking helper
  • terminal: make a terminal FDs non-blocking
  • mainloop: io_uring: disable IORING_POLL_ADD_MULTI
  • rename functions which clash with libsystemd’s
  • src/tests: Fix container creation errors
  • tests: fix parse_config_file seccomp test
  • explicitly convert *mainloop_handler to __u64
  • github: Add DCO/target tests
  • get_hierarchy: dont WARN about no usable controller
  • CONTRIBUTING: add a note on AI generated code
  • github: Update for main branch

Support and upgrade

The LXC 5.0 branch is supported until June 2027.
Only bugfixes and securitiy issues get included into the stable bugfix releases, so it’s always safe and recommended to keep up and run the latest bugfix release.


1 Like

Is this announcement still not published on the official page? The Japanese translation is done :slight_smile:

Let me see, I may have forgotten to run the script or forgot to push send afterwards :slight_smile: