CVE-2025-62596

moderate-risk
Published 2025-11-06

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.

Do I need to act?

-
0.04% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: bd54457ba9de1629f21fe678687f433aec63e7c7
10
CVSS 10.0/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Youki

Affected Vendors

Youki-Dev

References (5)

Patch https://github.com/youki-dev/youki/commit/5886c91073b9be748bd8d5aed49c4a82054803...
Vendor Advisory https://github.com/youki-dev/youki/security/advisories/GHSA-vf95-55w6-qmrf
Not Applicable https://pkg.go.dev/github.com/cyphar/filepath-securejoin/pathrs-lite/procfs
Not Applicable https://youtu.be/tGseJW_uBB8
Not Applicable https://youtu.be/y1PaBzxwRWQ
38
/ 100
moderate-risk
Severity 33/34 · Critical
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal