GHSA-4v98-7qmw-rqr8
GitHub Security Advisory
BuildKit vulnerable to possible host system access from mount stub cleaner
✓ GitHub Reviewed
CRITICAL
Has CVE
Advisory Details
### Impact
A malicious BuildKit frontend or Dockerfile using `RUN --mount` could trick the feature that removes empty files created for the mountpoints into removing a file outside the container, from the host system.
### Patches
The issue has been fixed in v0.12.5
### Workarounds
Avoid using BuildKit frontend from an untrusted source or building an untrusted Dockerfile containing `RUN --mount` feature.
### References
Affected Packages
Go
github.com/moby/buildkit
Affected versions:
0
(fixed in 0.12.5)
Related CVEs
Key Information
9.0
/10
Dataset
Last updated: July 12, 2025 6:29 AM
Data from GitHub Advisory Database. This information is provided for research and educational purposes.