Description
BubblewrapLauncher.cpp in WebKitGTK and WPE WebKit before 2.34.1 allows a limited sandbox bypass that allows a sandboxed process to trick host processes into thinking the sandboxed process is not confined by the sandbox, by abusing VFS syscalls that manipulate its filesystem namespace. The impact is limited to host services that create UNIX sockets that WebKit mounts inside its sandbox, and the sandboxed process remains otherwise confined. NOTE: this is similar to CVE-2021-41133.
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 | wpewebkit +1 | 2.34.1-1 | — |
| Debian 13 | wpewebkit +1 | 2.34.1-1 | — |
| Debian 12 | wpewebkit +1 | 2.34.1-1 | — |
| Debian 11 | wpewebkit +1 | 2.34.1-1~deb11u1 | DSA-4996-1, DSA-4995-1 |
| Debian 10 | webkit2gtk | 2.34.1-1~deb10u1 | DSA-4995-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | qtwebkit-opensource-src | No fix yet | — |
| Ubuntu 22.04 LTS | webkit2gtk | 2.34.1-1ubuntu1 | — |
| Ubuntu 22.04 LTS | wpewebkit +1 | No fix yet | — |
| Ubuntu 20.04 LTS | webkit2gtk | 2.34.1-0ubuntu0.20.04.1 | USN-5127-1 |
| Ubuntu 20.04 LTS | wpewebkit +1 | No fix yet | — |
| Ubuntu 18.04 LTS | webkitgtk +2 | No fix yet | — |
| Ubuntu 16.04 LTS | webkitgtk +3 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 ELS | webkitgtk4 +4 | 2.48.3-2.el7_9 | RHSA-2025:10364 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | webkit2gtk3 | 2.32.4-15.1 | SUSE-SU-2021:3603-1 |
| SLES 15 SP2 | webkit2gtk3 | 2.32.4-15.1 | SUSE-SU-2021:3603-1 |
| SLES 15 SP1 | webkit2gtk3 | 2.34.1-3.87.1 | SUSE-SU-2021:3769-1 |
| SLES 15 | webkit2gtk3 | 2.34.1-3.87.1 | SUSE-SU-2021:3769-1 |
| SLES 12 SP5 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SLES 12 SP3 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SLES 12 SP2 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SLES for SAP 15 SP1 | webkit2gtk3 | 2.34.1-3.87.1 | SUSE-SU-2021:3769-1 |
| SLES for SAP 15 | webkit2gtk3 | 2.34.1-3.87.1 | SUSE-SU-2021:3769-1 |
| SLES for SAP 12 SP5 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SLES for SAP 12 SP4 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SLES for SAP 12 SP3 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SLE HPC 15 SP1 | webkit2gtk3 | 2.34.1-3.87.1 | SUSE-SU-2021:3769-1 |
| SLE HPC 15 | webkit2gtk3 | 2.34.1-3.87.1 | SUSE-SU-2021:3769-1 |
| SUSE OpenStack Cloud Crowbar 9 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SUSE OpenStack Cloud Crowbar 8 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SUSE OpenStack Cloud 9 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SUSE OpenStack Cloud 8 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SUSE HPE Helion OpenStack 8 | webkit2gtk3 | 2.32.4-2.74.5 | SUSE-SU-2021:3768-1 |
| SUSE Enterprise Storage 6 | webkit2gtk3 | 2.34.1-3.87.1 | SUSE-SU-2021:3769-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | webkit2gtk3 | 2.32.4-15.1 | openSUSE-SU-2021:3603-1 |
| openSUSE Leap 15.2 | webkit2gtk3 | 2.32.4-lp152.2.22.1 | openSUSE-SU-2021:1454-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.20 | webkit2gtk | 2.34.1-r0 | — |
| Alpine v3.19 | webkit2gtk | 2.34.1-r0 | — |
| Alpine v3.18 | webkit2gtk | 2.34.1-r0 | — |
| Alpine v3.17 | webkit2gtk | 2.34.1-r0 | — |
| Alpine v3.16 | webkit2gtk | 2.34.1-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.15 | webkit2gtk | 2.34.1-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | webkitgtk4 +3 | 2.38.5-3.amzn2.0.1 | ALAS2-2023-2088 |
Advisories 12
- RHSA-2025:10364 Red Hat Security Advisory: webkitgtk4 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- WID-SEC-2022-0432 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- WID-SEC-2022-0302 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Administratorrechten BSI CERT-Bund (WID) · Oct 11, 2026
- USN-5127-1 webkit2gtk vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4996-1 wpewebkit - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4995-1 webkit2gtk - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2021:3603-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3768-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1454-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3603-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3769-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2023-2088 Important: webkitgtk4 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 28, 2024
References
- https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q
- https://bugs.webkit.org/show_bug.cgi?id=231479
- [oss-security] 20211026 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-list
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-list
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-list
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 mailing-list
- DSA-4995 vendor-advisory
- DSA-4996 vendor-advisory
- FEDORA-2021-db6ebb2d68 vendor-advisory
- FEDORA-2021-131360fa9a vendor-advisory
- FEDORA-2021-483d896d1d vendor-advisory