Description
Youki is a container runtime written in Rust. In versions 0.5.6 and below, youki’s apparmor handling performs insufficiently strict write-target validation, and when combined with path substitution during pathname resolution, can allow writes to unintended procfs locations. While resolving a path component-by-component, a shared-mount race can substitute intermediate components and redirect the final target. This issue is fixed in version 0.5.7.
Metrics
CVSS 3.1 10.0/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| youki-dev | youki | < 0.5.7 |
References
- https://github.com/youki-dev/youki/commit/5886c91073b9be748bd8d5aed49c4a820548030aPatch
- https://github.com/youki-dev/youki/security/advisories/GHSA-vf95-55w6-qmrfVendor Advisory
- https://pkg.go.dev/github.com/cyphar/filepath-securejoin/pathrs-lite/procfsNot Applicable
- https://youtu.be/tGseJW_uBB8Not Applicable
- https://youtu.be/y1PaBzxwRWQNot Applicable
Timeline
- Published
- Nov 6, 2025
- Last modified
- Oct 19, 2026
- NVD status
- Analyzed