CVE-2026-41163
Published: June 2, 2026Last modified: June 15, 2026
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7 |
| Attack Vector | LOCAL |
| Attack complexity | HIGH |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Notes
bubblewrap is not installed setuid
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | bubblewrap | Not affected (0.7.0-r0) |
| 25 LTS | bubblewrap | Not affected (0.11.0-r1) | |
| Stream | bubblewrap | Not affected (0.7.0-r0) |
References
- https://access.redhat.com/security/cve/CVE-2026-41163
- https://bugzilla.redhat.com/show_bug.cgi?id=2468439
- https://github.com/containers/bubblewrap/releases/tag/v0.11.2
- https://github.com/containers/bubblewrap/security/advisories/GHSA-xq78-7hw4-5jvp
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41163.json