Bug 2566562 (CVE-2026-121522) - CVE-2026-121522 github.com/moby/buildkit: BuildKit: Denial of Service via duplicate Git source metadata resolution
Summary: CVE-2026-121522 github.com/moby/buildkit: BuildKit: Denial of Service via dup...
Keywords:
Status: NEW
Alias: CVE-2026-121522
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
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URL:
Whiteboard:
Depends On: 2567063 2567064 2567065 2567066 2567067 2567068 2567069 2567070 2567071 2567072 2567073
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-03 22:22 UTC by OSIDB Bzimport
Modified: 2026-11-04 15:48 UTC (History)
117 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-11-03 22:22:45 UTC 
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.
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