CVE-2025-62161
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-06

Last updated on: 2025-11-10

Assigner: GitHub, Inc.

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.
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Meta Information
Published
2025-11-06
Last Modified
2025-11-10
Generated
2026-06-16
AI Q&A
2025-11-06
EPSS Evaluated
2026-06-15
NVD
CVE-2025-62161
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
youki-dev youki to 0.5.7 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-363 The product checks the status of a file or directory before accessing it, which produces a race condition in which the file can be replaced with a link before the access is performed, causing the product to access the wrong file.
CWE-61 The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.
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Executive Summary

This vulnerability exists in Youki container runtime versions 0.5.6 and below. It involves insufficient initial validation of the source /dev/null when Youki uses bind mounting the container's /dev/null as a file mask. This flaw allows an attacker to escape the container, potentially breaking out of the container's isolation.

Impact Analysis

The vulnerability can allow an attacker to escape from a container, which compromises the container's isolation. This can lead to unauthorized access to the host system or other containers, potentially resulting in data breaches, privilege escalation, or disruption of services.

Mitigation Strategies

Upgrade Youki to version 0.5.7 or later, as this version contains the fix for the container escape vulnerability related to bind mounting /dev/null.

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