Description
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, watchOS 5.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | iOS | unspecified – < iOS 12.2 | iOS 12.2 |
| Apple | tvOS | unspecified – < tvOS 12.2 | tvOS 12.2 |
| Apple | watchOS | unspecified – < watchOS 5.2 | watchOS 5.2 |
| Apple | Safari | unspecified – < Safari 12.1 | Safari 12.1 |
| Apple | iTunes for Windows | unspecified – < iTunes 12.9.4 for Windows | iTunes 12.9.4 for Windows |
| Apple | iCloud for Windows | unspecified – < iCloud for Windows 7.11 | iCloud for Windows 7.11 |
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 | webkit2gtk | 2.24.1-1 | — |
| Debian 13 | webkit2gtk | 2.24.1-1 | — |
| Debian 12 | webkit2gtk | 2.24.1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | qtwebkit-opensource-src | No fix yet | — |
| Ubuntu 22.04 LTS | qtwebkit-opensource-src | No fix yet | — |
| Ubuntu 20.04 LTS | qtwebkit-opensource-src | No fix yet | — |
| Ubuntu 18.04 LTS | webkit2gtk | 2.24.1-0ubuntu0.18.04.1 | USN-3948-1 |
| 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 | SDL +1 | 1.2.15-35.el8 | RHSA-2019:3553 |
| RHEL 8 | accountsservice +2 | 0.6.50-7.el8 | RHSA-2019:3553 |
| RHEL 8 | appstream-data | 8-20190805.el8 | RHSA-2019:3553 |
| RHEL 8 | baobab | 3.28.0-2.el8 | RHSA-2019:3553 |
| RHEL 8 | chrome-gnome-shell | 10.1-6.el8 | RHSA-2019:3553 |
| RHEL 8 | evince +3 | 3.28.4-3.el8 | RHSA-2019:3553 |
| RHEL 8 | file-roller | 3.28.1-2.el8 | RHSA-2019:3553 |
| RHEL 8 | gdk-pixbuf2 +4 | 2.36.12-5.el8 | RHSA-2019:3553 |
| RHEL 8 | gdm | 1:3.28.3-22.el8 | RHSA-2019:3553 |
| RHEL 8 | gjs +1 | 1.56.2-3.el8 | RHSA-2019:3553 |
| RHEL 8 | gnome-classic-session +23 | 3.32.1-10.el8 | RHSA-2019:3553 |
| RHEL 8 | gnome-control-center +1 | 3.28.2-5.el8 | RHSA-2019:3553 |
| RHEL 8 | gnome-desktop3 +1 | 3.32.2-1.el8 | RHSA-2019:3553 |
| RHEL 8 | gnome-remote-desktop | 0.1.6-5.el8 | RHSA-2019:3553 |
| RHEL 8 | gnome-settings-daemon | 3.32.0-4.el8 | RHSA-2019:3553 |
| RHEL 8 | gnome-shell | 3.32.2-9.el8 | RHSA-2019:3553 |
| RHEL 8 | gnome-software +1 | 3.30.6-2.el8 | RHSA-2019:3553 |
| RHEL 8 | gnome-tweaks | 3.28.1-6.el8 | RHSA-2019:3553 |
| RHEL 8 | gsettings-desktop-schemas +1 | 3.32.0-3.el8 | RHSA-2019:3553 |
| RHEL 8 | gtk3 +3 | 3.22.30-4.el8 | RHSA-2019:3553 |
| RHEL 8 | gvfs +10 | 1.36.2-6.el8 | RHSA-2019:3553 |
| RHEL 8 | mozjs60 +1 | 60.9.0-3.el8 | RHSA-2019:3553 |
| RHEL 8 | mutter +1 | 3.32.2-10.el8 | RHSA-2019:3553 |
| RHEL 8 | nautilus +2 | 3.28.1-10.el8 | RHSA-2019:3553 |
| RHEL 8 | pango +1 | 1.42.4-6.el8 | RHSA-2019:3553 |
| RHEL 8 | pidgin +3 | 2.13.0-5.el8 | RHSA-2019:3553 |
| RHEL 8 | plymouth +16 | 0.9.3-15.el8 | RHSA-2019:3553 |
| RHEL 8 | wayland-protocols +1 | 1.17-1.el8 | RHSA-2019:3553 |
| RHEL 8 | webkit2gtk3 +4 | 2.24.3-1.el8 | RHSA-2019:3553 |
| RHEL 7 | webkitgtk4 +5 | 2.22.7-2.el7 | RHBA-2019:2261 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | gdk-pixbuf2 +4 | 2.36.12-5.el8 | ALSA-2019:3553 |
| AlmaLinux 8 | gnome-desktop3 +1 | 3.32.2-1.el8 | ALSA-2019:3553 |
| AlmaLinux 8 | pidgin +3 | 2.13.0-5.el8 | ALSA-2019:3553 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | gdk-pixbuf2 | 2.36.12-5.el8 | RLSA-2019:3553 |
| Rocky Linux 8 | gnome-desktop3 | 3.32.2-1.el8 | RLSA-2019:3553 |
| Rocky Linux 8 | pango | 1.42.4-6.el8 | RLSA-2019:3553 |
| Rocky Linux 8 | pidgin | 2.13.0-5.el8 | RLSA-2019:3553 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | webkit2gtk3 | 2.24.1-3.24.1 | SUSE-SU-2019:1137-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gtk3 | 2.32.4-1.1 | openSUSE-SU-2024:11506-1 |
| openSUSE Leap 15.0 | webkit2gtk3 | 2.24.1-lp150.2.19.1 | openSUSE-SU-2019:1374-1 |
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.
Exploit-DB 1
- WebKit JavaScriptCore - Out-Of-Bounds Access in FTL JIT due to LICM Moving Array Access Before the Bounds Check EDB-46649 · dos · Apr 3, 2019 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 9
- ALSA-2019:3553 Low: GNOME security, bug fix, and enhancement update AlmaLinux Security Advisories · Nov 5, 2026
- WID-SEC-2026-4026 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 18, 2026
- RHSA-2019:3553 Red Hat Security Advisory: GNOME security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHBA-2019:2261 Red Hat Bug Fix Advisory: webkitgtk4 bug fix update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-3948-1 webkit2gtk vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- RLSA-2019:3553 Low: GNOME security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2019:1137-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1374-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11506-1 libjavascriptcoregtk-4_0-18-2.32.4-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026