Memory Allocation with Excessive Size Value Affecting github.com/moby/buildkit/frontend/dockerui package, versions <0.33.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMMOBYBUILDKITFRONTENDDOCKERUI-20826447
- published11 Oct 2026
- disclosed5 Oct 2026
- creditaqueel707
Introduced: 5 Oct 2026
NewCVE-2026-93323 Â (opens in a new tab)How to fix?
Upgrade github.com/moby/buildkit/frontend/dockerui to version 0.33.1 or higher.
Overview
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value due to unbounded file reads in ReadEntrypoint, dockerIgnorePatterns, and NamedContext.load in frontend/dockerui/config.go and frontend/dockerui/namedcontext.go. An attacker can exhaust buildkitd memory and terminate the daemon by supplying an oversized Dockerfile or .dockerignore in a build context. This interrupts builds on the affected instance and can take down other concurrent builds that share the same daemon.
Workarounds
- Only build from trusted build contexts.
- Run
buildkitdunder a memory limit such as a cgroup or container memory limit, so any memory exhaustion stays contained to the daemon and does not take down other concurrent builds.