crun: crun is an open source OCI Container Runtime fully written in C
CVE-2026-47766 is fixed in crun on 1 platform by DEBIAN-CVE-2026-47766 (version 1.28-1), released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -> pts/ptmx` symlink. Version 1.28 fixes the issue.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| crun · Debian 14 | 1.28-1 | DEBIAN-CVE-2026-47766 | Jun 24, 2026 |
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