by Kastro
Paper/Archive/CVE-2025-62596

CVE-2025-62596

youki-dev youki — youki container escape and denial of service due to arbitrary write gadgets and procfs write redirects

EPSS 0.3%CVSS 10.0
critical.is priorityof 100
34
CVSS 10.0 (NVD)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 18.9.189 × 203.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
youki< 0.5.7–CNA

Scores by source

NVD10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
GitHub_M (CNA)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
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/youki-dev/youki/security/advisories/GHSA-vf95-55w6-qmrfrefgithub.com/youki-dev/youki/commit/5886c91073b9be748bd8d5aed49c4a820548030arefpkg.go.dev/github.com/cyphar/filepath-securejoin/pathrs-lite/procfsrefyoutu.be/tGseJW_uBB8refyoutu.be/y1PaBzxwRWQ