- user: prevent possible DoS via unbounded parsing of user and group
database files in GHSA-mjcv-p78q-w5fw. This fixes a similar issue
as CVE-2026-47262 in containerd.
- user: prevent falling back to looking up numeric usernames
Improve handling of numeric user/group to prevent looking up numeric
values as usernames. This fixes a similar issue as [CVE-2026-46680] in
containerd.
- user: update minimum go version to go1.18
- assorted testing and linting fixes.
[CVE-2026-46680]: https://github.com/advisories/GHSA-fqw6-gf59-qr4w
full diff: https://github.com/moby/sys/compare/user/v0.4.0...user/v0.4.1
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>