CVE-2025-62596

CriticalCVSS 10.0

Published: 06/11/2025(UTC)Updated: 19/10/2026(UTC)Translated: 19/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.27%

18th percentile - higher than 18% of all known CVEs

Summary

Youki, a Rust-based container runtime, in versions 0.5.6 and below performs insufficiently strict write-target validation in AppArmor handling. Combined with path substitution during pathname resolution, this 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. Fixed in 0.5.7.

Risk Assessment

An attacker can write to sensitive procfs locations, potentially leading to privilege escalation or container escape. This may break container isolation.

Recommendation

Upgrade Youki to version 0.5.7 or later. Avoid running untrusted containers until patched.

Other vulnerabilities in Youki

CVE-2025-62161Critical
Youki, a Rust-based container runtime, in versions 0.5.6 and below has insufficient initial validation of the /dev/null source. This allows container escape when Youki bind-mounts the container's /dev/null as a file mask. Fixed in 0.5.7.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS