Description
In BuildKit versions v0.26.0 through v0.34.1, a specific build definition that resolves metadata for the same Git source reference twice can cause the BuildKit daemon to panic and crash, interrupting builds handled by that daemon. The issue is fixed in v0.34.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| moby | BuildKit | 0.26.0 – < 0.34.2 | 0.34.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | docker.io +1 | No fix yet | — |
| Ubuntu 26.04 LTS | docker.io +1 | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | docker.io +1 | No fix yet | — |
| Ubuntu Pro 22.04 LTS | docker.io +1 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | docker.io +1 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | docker.io | No fix yet | — |
| Ubuntu Pro 16.04 LTS | docker.io | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | podman +4 | 5:6.1.4-1.3.hum1 | RHSA-2026:95611 |
Advisories 2
- RHSA-2026:95611 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- WID-SEC-2026-4338 BuildKit: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 10, 2026