CVE-2026-41163 — bubblewrap vulnerable to privilege escalation in setuid mode via ptrace

Affected: containers bubblewrap, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4

bubblewrap is a low-level unprivileged sandboxing tool. From version 0.11.0 to before version 0.11.2, if bubblewrap is installed in setuid mode then the user can use ptrace to attach to bubblewrap and control the unprivileged part of the sandbox setup phase. This allows the attacker to arbitrarily use the privileged operations, and in particular the "overlay mount" operation, allowing the creation of overlay mounts which is otherwise not allowed in the setuid version of bubblewrap. This issue has been patched in version 0.11.2.

USN-8288-1 — bubblewrap vulnerability

Affected: Ubuntu:25.10: bubblewrap, Ubuntu:26.04:LTS: bubblewrap

It was discovered that Bubblewrap incorrectly handled the sandbox setup phase when installed in setuid mode. A local attacker could possibly use this issue to bypass sandbox restrictions.

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CVE-2026-41163 — bubblewrap vulnerable to privilege escalation in setuid mode via ptrace

USN-8288-1 — bubblewrap vulnerability