Description
A flaw was found in bubblewrap. During sandbox setup, creating files or directories under the new root can follow a parent symlink onto the host via /oldroot, writing attacker-chosen paths outside the sandbox as the launching user. This happens before the sandboxed process starts. This issue is GHSA-pxhw-h44j-8pfx. It is fixed in bubblewrap 0.12.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | — |
| Red Hat | Red Hat Hardened Images | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | bubblewrap | 0.12.0-1 | — |
| Debian 13 | bubblewrap | 0.12.0-1~deb13u1 | — |
| Debian 12 | bubblewrap | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | bubblewrap | 0.11.1-1ubuntu0.2 | USN-8779-1 |
| Ubuntu 24.04 LTS | bubblewrap | 0.9.0-1ubuntu0.2 | USN-8779-1 |
| Ubuntu 22.04 LTS | bubblewrap | 0.6.1-1ubuntu0.2 | USN-8779-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | bubblewrap | 0.4.0-1ubuntu4.1+esm2 | USN-8779-1 |
| Ubuntu Pro 18.04 LTS | bubblewrap | 0.2.1-1ubuntu0.1+esm2 | USN-8779-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | bubblewrap | 0.10.0-5.el10_2 | RHSA-2026:85308 |
| RHEL 9 | bubblewrap | 0.6.3-1.el9_8.1 | RHSA-2026:85309 |
| RHEL 8 | bubblewrap | 0.4.0-3.el8_10 | RHSA-2026:85306 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | bubblewrap | 0.10.0-3.el10_0.4 | RHSA-2026:85312 |
| RHEL 9.6 EUS | bubblewrap | 0.4.1-8.el9_6.1 | RHSA-2026:85325 |
| RHEL 9.4 E4S | bubblewrap | 0.4.1-7.el9_4.1 | RHSA-2026:85319 |
| RHEL 9.2 E4S | bubblewrap | 0.4.1-7.el9_2.1 | RHSA-2026:85322 |
| RHEL 8.8 TUS | bubblewrap | 0.4.0-3.el8_8 | RHSA-2026:85313 |
| RHEL 8.8 E4S | bubblewrap | 0.4.0-3.el8_8 | RHSA-2026:85313 |
| RHEL 8.6 EUS Long Life | bubblewrap | 0.4.0-3.el8_6 | RHSA-2026:85324 |
| RHEL 8.6 AUS | bubblewrap | 0.4.0-3.el8_6 | RHSA-2026:85324 |
| RHEL 8.4 EUS Long Life | bubblewrap | 0.4.0-3.el8_4 | RHSA-2026:85317 |
| RHEL 8.4 AUS | bubblewrap | 0.4.0-3.el8_4 | RHSA-2026:85317 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | bubblewrap | 0.10.0-5.el10_2 | ALSA-2026:85308 |
| AlmaLinux 9 | bubblewrap | 0.6.3-1.el9_8.1 | ALSA-2026:85309 |
| AlmaLinux 8 | bubblewrap | 0.4.0-3.el8_10 | ALSA-2026:85306 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | bubblewrap | 0.10.0-5.el10_2 | RLSA-2026:85308 |
| Rocky Linux 9 | bubblewrap | 0.6.3-1.el9_8.1 | RLSA-2026:98521, RLSA-2026:85309 |
| Rocky Linux 8 | bubblewrap | 0.4.0-3.el8_10 | RLSA-2026:85306 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | flatpak | 1.18.3-1.1 | openSUSE-SU-2026:11873-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | bubblewrap | 0.12.0-1.amzn2023.0.1 | ALAS2023-2026-3105 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | bubblewrap | 0.12.0-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | bubblewrap | 0.10.0-5.el10_2 | ELSA-2026-85308 |
| Oracle Linux 9 | bubblewrap | 0.6.3-1.el9_8.1 | ELSA-2026-85309 |
| Oracle Linux 8 | bubblewrap | 0.4.0-3.el8_10 | ELSA-2026-85306 |
Advisories 24
- RLSA-2026:98521 Important: bubblewrap security update Rocky Linux Security Advisories · Nov 12, 2026
- WID-SEC-2026-4029 Red Hat Enterprise Linux (python-tornado, resteasy-core, bubblewrap, pgvector): Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- ALSA-2026:85309 Important: bubblewrap security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:85308 Important: bubblewrap security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:85306 Important: bubblewrap security update AlmaLinux Security Advisories · Oct 29, 2026
- RLSA-2026:85308 Important: bubblewrap security update Rocky Linux Security Advisories · Oct 21, 2026
- RLSA-2026:85306 Important: bubblewrap security update Rocky Linux Security Advisories · Oct 21, 2026
- RLSA-2026:85309 Important: bubblewrap security update Rocky Linux Security Advisories · Oct 21, 2026
- RHSA-2026:85317 Red Hat Security Advisory: bubblewrap security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:85306 Red Hat Security Advisory: bubblewrap security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:85322 Red Hat Security Advisory: bubblewrap security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:85324 Red Hat Security Advisory: bubblewrap security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:85309 Red Hat Security Advisory: bubblewrap security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:85312 Red Hat Security Advisory: bubblewrap security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:85313 Red Hat Security Advisory: bubblewrap security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:85319 Red Hat Security Advisory: bubblewrap security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:85308 Red Hat Security Advisory: bubblewrap security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:85325 Red Hat Security Advisory: bubblewrap security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- ELSA-2026-85306 Important: bubblewrap security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 19, 2026
- ELSA-2026-85308 Important: bubblewrap security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Oct 19, 2026
- ELSA-2026-85309 Important: bubblewrap security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Oct 19, 2026
- ALAS2023-2026-3105 Important: bubblewrap security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 28, 2026
- openSUSE-SU-2026:11873-1 flatpak-1.18.3-1.1 on GA media SUSE / openSUSE Security Updates · Sep 25, 2026
- USN-8779-1 bubblewrap vulnerabilities Ubuntu Security Notices (USN) · Sep 18, 2026
References
- RHSA-2026:85306 vendor-advisory
- RHSA-2026:85308 vendor-advisory
- RHSA-2026:85309 vendor-advisory
- RHSA-2026:85312 vendor-advisory
- RHSA-2026:85313 vendor-advisory
- RHSA-2026:85317 vendor-advisory
- RHSA-2026:85319 vendor-advisory
- RHSA-2026:85322 vendor-advisory
- RHSA-2026:85324 vendor-advisory
- RHSA-2026:85325 vendor-advisory
- RHSA-2026:98521 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-87766 vdb-entry
- https://bugs.debian.org/1145655
- RHBZ#2530542 issue-tracking
- https://github.com/containers/bubblewrap/releases/tag/v0.12.0
- https://github.com/containers/bubblewrap/security/advisories/GHSA-pxhw-h44j-8pfx
- https://www.openwall.com/lists/oss-security/2026/08/27/7