Read the docs
TI-2025-38811 Aliases CVE-2025-62596GHSA-vf95-55w6-qmrf

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

Priority LOW 34CWE-363Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Active
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00267 18th percentileScored 2026-11-07
Fix Fixed youki (youki-dev): 0.5.7youki (crates.io): 0.5.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
youki-devyoukibefore 0.5.70.5.7Patch availableCNA
—youki (crates.io)before 0.5.70.5.7Patch availableGHSA-vf95-55w6-qmrf
  • youki Vendoryouki-dev Affected before 0.5.7 Fixed in 0.5.7 Patch available CNA
  • youki (crates.io) Vendor— Affected before 0.5.7 Fixed in 0.5.7 Patch available GHSA-vf95-55w6-qmrf

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:youki-dev:youki:*:*:*:*:*:rust:*:*before 0.5.7Vulnerableyouki-dev
  • cpe:2.3:a:youki-dev:youki:*:*:*:*:*:rust:*:* Versions before 0.5.7 Vulnerable ·youki-dev

Remediation

  • Fix · CNA youki (youki-dev) Fixed in 0.5.7
  • Fix · GHSA-vf95-55w6-qmrf youki (crates.io) Fixed in 0.5.7 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-62596
  2. 2026-10-03 Alias added: GHSA-vf95-55w6-qmrf

References

Patch 1

Advisory 2

Other 5

  • TI-2025-38482 youki container escape via "masked path" abuse due to mount race conditions CVSS 4.0HIGH 7.3
  • TI-2025-34601 Youki Symlink Following Vulnerability CVSS 3.1HIGH 7.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences