CVE-2025-62161

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

0.26%

17th percentile - higher than 17% of all known CVEs

Summary

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.

Risk Assessment

An attacker can escape the container and gain access to the host system. This may lead to full system compromise and affect other containers.

Recommendation

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

Other vulnerabilities in Youki

CVE-2025-62596Critical
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.

Original NVD description (English source)

Youki is a container runtime written in Rust. In versions 0.5.6 and below, the initial validation of the source /dev/null is insufficient, allowing container escape when youki utilizes bind mounting the container's /dev/null as a file mask. This issue is fixed in version 0.5.7.

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