crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the `crun exec` option `-u` (`--user`) is incorrectly parsed. The value `1` is interpreted as UID 0 and GID 0 when it should have been UID 1 and GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade crun | Apr 7, 2026 | Apr 6, 2026 |
| Alpine Linux | — | Upgrade crun | Mar 27, 2026 | Mar 25, 2026 |
| Oracle_linux | — | Upgrade crun | Apr 22, 2026 | Mar 25, 2026 |
| Redhat Openshift | — | Upgrade rhcos | Aug 10, 2026 | Mar 25, 2026 |
| Redhat_linux | — | Upgrade crunUpgrade crun-debugsourceUpgrade container-selinuxUpgrade crun-krunUpgrade crun-debuginfo | Apr 7, 2026 | Mar 25, 2026 |
| Rocky_linux | — | Upgrade crun-debuginfoUpgrade crunUpgrade crun-debugsource | Apr 10, 2026 | Apr 9, 2026 |
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