Description
WebKitGTK+ 2.20.3 has an off-by-one error, with a resultant out-of-bounds write, in the get_simple_globs functions in ThirdParty/xdgmime/src/xdgmimecache.c and ThirdParty/xdgmime/src/xdgmimeglob.c.
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 | 2.20.4-1 | — |
| Debian 13 | webkit2gtk | 2.20.4-1 | — |
| Debian 12 | webkit2gtk | 2.20.4-1 | — |
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 | 2.20.5-0ubuntu0.18.04.1 | USN-3743-1 |
| Ubuntu 18.04 LTS | webkitgtk +2 | No fix yet | — |
| Ubuntu 16.04 LTS | webkit2gtk | 2.20.5-0ubuntu0.16.04.1 | USN-3743-1 |
| Ubuntu 16.04 LTS | webkitgtk +2 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | webkit2gtk3 | 2.20.5-3.8.1 | SUSE-SU-2018:2752-1 |
| SLES 12 SP3 | webkit2gtk3 | 2.20.3-2.23.8 | SUSE-SU-2018:3387-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | webkit2gtk3 | 2.20.3-2.23.8 | SUSE-SU-2018:3387-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gtk3 | 2.32.4-1.1 | openSUSE-SU-2024:11506-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.8 | webkit2gtk | 2.20.4-r0 | — |
Advisories 4
- USN-3743-1 webkit2gtk vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2018:2752-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3387-1 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
References
- USN-3743-1 vendor-advisory
- https://trac.webkit.org/changeset/233404/webkit