CVE-2026-61712
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Summary
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, BuildKit read attacker-controlled /etc/passwd and /etc/group files without an upper bound while resolving a username to a user identifier or group identifier in executor/oci/user.go and solver/llbsolver/ops/user_linux.go. A malicious base image or build could provide oversized files that exhausted memory during user resolution and caused out-of-memory termination of the buildkitd process. This issue is fixed in version 0.31.1.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| moby | buildkit | < 0.31.1 | affected |
Weaknesses
- CWE-770: CWE-770: Allocation of Resources Without Limits or Throttling
References
- https://github.com/moby/buildkit/security/advisories/GHSA-72x6-4j93-7w86
- https://github.com/moby/buildkit/commit/408266e4ba254cecabedaacdad6905de4d2a75a1
- https://github.com/moby/buildkit/commit/69a3924648e485acb3faad3081e03a8554431255
- https://github.com/moby/buildkit/releases/tag/v0.31.1
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