Description
A use after free issue was addressed with improved memory management. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to arbitrary code execution.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | iOS and iPadOS | unspecified – < 15 | 15 |
| Apple | tvOS | unspecified – < 15 | 15 |
| Apple | Safari | unspecified – < 15 | 15 |
| Apple | watchOS | unspecified – < 8 | 8 |
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 | 2.32.4-1 | — |
| Debian 13 | wpewebkit +1 | 2.32.4-1 | — |
| Debian 12 | wpewebkit +1 | 2.32.4-1 | — |
| Debian 11 | wpewebkit +1 | 2.32.4-1~deb11u1 | DSA-4976-1, DSA-4975-1 |
| Debian 10 | webkit2gtk | 2.32.4-1~deb10u1 | DSA-4975-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | qtwebkit-opensource-src | No fix yet | — |
| Ubuntu 22.04 LTS | wpewebkit +1 | No fix yet | — |
| Ubuntu 20.04 LTS | webkit2gtk | 2.32.4-0ubuntu0.20.04.1 | — |
| Ubuntu 20.04 LTS | wpewebkit +1 | No fix yet | — |
| Ubuntu 18.04 LTS | webkit2gtk | 2.32.4-0ubuntu0.18.04.1 | — |
| 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 8 | webkit2gtk3 +3 | 2.34.6-1.el8 | RHSA-2022:1777 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 ELS | webkitgtk4 +4 | 2.48.3-2.el7_9 | RHSA-2025:10364 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | webkit2gtk3 +3 | 2.34.6-1.el8 | ALSA-2022:1777 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | webkit2gtk3 | 2.34.6-1.el8 | RLSA-2022:1777 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | webkit2gtk3 | 2.34.3-23.3 | SUSE-SU-2022:0182-1 |
| SLES 15 SP2 | webkit2gtk3 | 2.34.3-23.3 | SUSE-SU-2022:0182-1 |
| SLES 15 SP1 | webkit2gtk3 | 2.34.3-3.92.1 | SUSE-SU-2022:0183-1 |
| SLES 15 | webkit2gtk3 | 2.34.3-3.92.1 | SUSE-SU-2022:0183-1 |
| SLES 12 SP5 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
Show 23 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SLES 12 SP3 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SLES 12 SP2 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SLES for SAP 15 SP2 | webkit2gtk3 | 2.34.3-23.3 | SUSE-SU-2022:0182-1 |
| SLES for SAP 15 SP1 | webkit2gtk3 | 2.34.3-3.92.1 | SUSE-SU-2022:0183-1 |
| SLES for SAP 15 | webkit2gtk3 | 2.34.3-3.92.1 | SUSE-SU-2022:0183-1 |
| SLES for SAP 12 SP5 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SLES for SAP 12 SP4 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SLES for SAP 12 SP3 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SLE Real Time 15 SP2 | webkit2gtk3 | 2.34.3-23.3 | SUSE-SU-2022:0182-2 |
| SLE HPC 15 SP2 | webkit2gtk3 | 2.34.3-23.3 | SUSE-SU-2022:0182-1 |
| SLE HPC 15 SP1 | webkit2gtk3 | 2.34.3-3.92.1 | SUSE-SU-2022:0183-1 |
| SLE HPC 15 | webkit2gtk3 | 2.34.3-3.92.1 | SUSE-SU-2022:0183-1 |
| SUSE OpenStack Cloud Crowbar 9 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SUSE OpenStack Cloud Crowbar 8 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SUSE OpenStack Cloud 9 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SUSE OpenStack Cloud 8 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SUSE Manager Server 4.1 | webkit2gtk3 | 2.34.3-23.3 | SUSE-SU-2022:0182-1 |
| SUSE Manager Retail Branch Server 4.1 | webkit2gtk3 | 2.34.3-23.3 | SUSE-SU-2022:0182-1 |
| SUSE Manager Proxy 4.1 | webkit2gtk3 | 2.34.3-23.3 | SUSE-SU-2022:0182-1 |
| SUSE HPE Helion OpenStack 8 | webkit2gtk3 | 2.34.3-2.82.1 | SUSE-SU-2022:0142-1 |
| SUSE Enterprise Storage 7 | webkit2gtk3 | 2.34.3-23.3 | SUSE-SU-2022:0182-1 |
| SUSE Enterprise Storage 6 | webkit2gtk3 | 2.34.3-3.92.1 | SUSE-SU-2022:0183-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | webkit2gtk3 | 2.34.3-23.3 | openSUSE-SU-2022:0182-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.20 | webkit2gtk | 2.32.4-r0 | — |
| Alpine v3.19 | webkit2gtk | 2.32.4-r0 | — |
| Alpine v3.18 | webkit2gtk | 2.32.4-r0 | — |
| Alpine v3.17 | webkit2gtk | 2.32.4-r0 | — |
| Alpine v3.16 | webkit2gtk | 2.32.4-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | webkitgtk4 +3 | 2.38.5-3.amzn2.0.1 | ALAS2-2023-2088 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | webkit2gtk3 +3 | 2.34.6-1.el8 | ELSA-2022-1777 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
seregonwar/CVE-2021-30809-OOM ★ 4 · Aug 9, 2025
CVE-2021-30809 UAF use-after-free PoC
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 14
- ALSA-2022:1777 Moderate: webkit2gtk3 security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2025:10364 Red Hat Security Advisory: webkitgtk4 security update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- DSA-4975-1 webkit2gtk - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4976-1 wpewebkit - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RHSA-2022:1777 Red Hat Security Advisory: webkit2gtk3 security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Mar 6, 2026
- RLSA-2022:1777 Moderate: webkit2gtk3 security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- openSUSE-SU-2022:0182-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0183-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0182-2 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0182-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:0142-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1335 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2025
- ALAS2-2023-2088 Important: webkitgtk4 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 28, 2024
- ELSA-2022-1777 Moderate: webkit2gtk3 security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 17, 2022