BuildKit possible race condition with accessing subpaths from cache mounts
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Two malicious build steps running in parallel sharing the same cache mounts with subpaths could cause a race condition that can lead to files from the host system being accessible to the build container. The issue has been fixed in v0.12.5. Workarounds include, avoiding using BuildKit frontend from an untrusted source or building an untrusted Dockerfile containing cache mounts with --mount=type=cache,source=... options.
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| moby | buildkit | before 0.12.5 | 0.12.5 | Patch available | CNA |
| — | github.com/moby/buildkit (Go) | before 0.12.5 | 0.12.5 | Patch available | GHSA-m3r6-h7wv-7xxv |
- buildkit Vendormoby Affected before 0.12.5 Fixed in 0.12.5 Patch available CNA
- github.com/moby/buildkit (Go) Vendor— Affected before 0.12.5 Fixed in 0.12.5 Patch available GHSA-m3r6-h7wv-7xxv
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mobyproject:buildkit:*:*:*:*:*:*:*:* | before 0.12.5 | Vulnerable | Mobyproject |
- cpe:2.3:a:mobyproject:buildkit:*:*:*:*:*:*:*:* Versions before 0.12.5 Vulnerable ·Mobyproject
Remediation
- Fix · CNA buildkit (moby) Fixed in 0.12.5
- Fix · GHSA-m3r6-h7wv-7xxv github.com/moby/buildkit (Go) Fixed in 0.12.5 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Dev Spaces | Affected | No fix yet |
| Red Hat Quay 3 | Affected | No fix yet |
Not affected: 7 products
- OpenShift Developer Tools and Services
- OpenShift Serverless
- OpenShift Service Mesh 2
- Red Hat Ansible Automation Platform 1.2
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2024-23651
- 2026-10-03 Alias added: GHSA-m3r6-h7wv-7xxv
References
More moby vulnerabilities
- TI-2026-14229 Tar extraction in moby/go-archive can write outside the destination directory via link following CVSS 4.0HIGH 7.1
- TI-2021-12512 Moby HyperKit uninitialized memory use in virtio-sock pci_vtsock_proc_tx CVSS 3.1HIGH 7.1
- TI-2024-27462 Moby authz zero length regression CVSS 3.1CRITICAL 10.0
- TI-2024-15672 BuildKit interactive containers API does not validate entitlements check CVSS 3.1CRITICAL 9.8
- TI-2024-15671 BuildKit possible host system access from mount stub cleaner CVSS 3.1CRITICAL 10.0
- TI-2026-26365 Moby: AuthZ plugin bypass with oversized request body CVSS 3.1HIGH 8.8
Sources
- CVE-2024-23651 · CVE Program
- CVE-2024-23651 · NVD
- FIRST EPSS
- GHSA-m3r6-h7wv-7xxv · GitHub Advisory Database · CC BY 4.0
- CVE-2024-23651 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences