Medium [CVE-2026-61711] Security bypass allows disabling container protections
This medium-severity Red Hat Linux advisory covers CVE-2026-61711 affecting Assisted Installer for Red Hat OpenShift Container Platform 2, Compliance Operator, Confidential Compute Attestation.
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Summary
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, a custom frontend could place an invalid SecurityMode value in a crafted build request, and executor/oci/spec_linux.go treated the unsupported value as a non-sandbox mode without requiring the security.insecure entitlement.
This disabled Seccomp and AppArmor protections for the build container even though Linux capabilities remained restricted. This issue is fixed in version 0.31.1.
A flaw was found in BuildKit. A custom frontend could craft a build request with an invalid security mode, leading to the disabling of Seccomp and AppArmor protections for the build container.
Red Hat severity: Moderate — CVSS 6.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L). Weakness: CWE-807.
Affected products named by the advisory: Assisted Installer for Red Hat OpenShift Container Platform 2; Compliance Operator; Confidential Compute Attestation; Kernel Module Management Operator for Red Hat Openshift; and 31 more.
Affected products named by the advisory: Logging Subsystem for Red Hat OpenShift; Logical Volume Manager Storage; Migration Toolkit for Applications 8; Migration Toolkit for Containers; and 27 more.
- < 0.31.1
Official advisory · high-confidence parse· fetched 10 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 10 days ago·verify at source
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