CVE-2025-62161

youki container escape via "masked path" abuse due to mount race conditions

State: Published
Severity: 7.3 High
Published: Nov 5, 2025
Updated: Nov 6, 2025
Reserved: Oct 7, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	7.3 High	CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	GitHub_M

Weaknesses

CWE-363 Race Condition Enabling Link Following
CWE-61 UNIX Symbolic Link (Symlink) Following

Affected Products

Product	Versions
youkiyouki-dev	< 0.5.7Affected

References

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