# CVE-2026-41163: bubblewrap: bubblewrap is a low-level unprivileged sandboxing tool

CVE-2026-41163 is fixed in bubblewrap on 1 platform, first by bubblewrap 0.11.0-2ubuntu0.1, released May 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-41163
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0027
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 8, 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bubblewrap Debian 13.5 (trixie) | 0.11.0-2+deb13u1 | [DEBIAN-CVE-2026-41163](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41163.md) | May 15, 2026 |
| Linux | bubblewrap Debian 14 | 0.11.2-1 | [DEBIAN-CVE-2026-41163](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41163.md) | May 15, 2026 |
| Linux | bubblewrap Ubuntu 25.10 (questing) | 0.11.0-2ubuntu0.1 | [bubblewrap 0.11.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-bubblewrap-0.11.0-2ubuntu0.1.md) | May 8, 2026 |
| Linux | bubblewrap Ubuntu 26.04.1 LTS (resolute) | 0.11.1-1ubuntu0.1 | [bubblewrap 0.11.1-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-bubblewrap-0.11.1-1ubuntu0.1.md) | May 8, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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