CVE-2025-54867 Details
Description
Youki is a container runtime written in Rust. Prior to version 0.5.5, if /proc and /sys in the rootfs are symbolic links, they can potentially be exploited to gain access to the host root filesystem. This issue has been patched in version 0.5.5.
A vulnerability in Youki, a container runtime written in Rust, allows access to the host root filesystem under certain conditions. This issue affects Youki versions prior to 0.5.5. The vulnerability arises when the `/proc` and `/sys` directories in the container's root filesystem are symbolic links. In such cases, Youki can successfully create a container, bypassing important security checks. This behavior contrasts with `runc`, another container runtime, which correctly identifies the risk and prevents container creation. The vulnerability can be exploited to access the host's root filesystem, potentially leading to unauthorized data exposure or modification.
Users can upgrade to Youki version 0.5.5 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 14, 2025References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-61 | UNIX Symbolic Link (Symlink) Following | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| youki-dev youki | < 0.5.5 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Nov 10, 2025 | Initial Analysis | [email protected] |
| Aug 14, 2025 | New CVE Received | [email protected] |