CVE-2025-62596

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.

CVSS 4.0

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

CVSS 3.1

10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-25)

CWEs

CWE-61, CWE-363

Published

2025-11-06

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

Affected

• youki-dev:youki

Packages (OSV)

References

• https://github.com/youki-dev/youki/commit/5886c91073b9be748bd8d5aed49c4a820548030a
• https://github.com/youki-dev/youki/security/advisories/GHSA-vf95-55w6-qmrf
• https://pkg.go.dev/github.com/cyphar/filepath-securejoin/pathrs-lite/procfs
• https://youtu.be/tGseJW_uBB8
• https://youtu.be/y1PaBzxwRWQ

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