Use After Free Affecting webkit2gtk package, versions <2.20.2-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ECHOLATEST-WEBKIT2GTK-18016920
- published19 Jul 2026
- disclosed19 Jun 2018
Introduced: 19 Jun 2018
CVE-2018-12294 (opens in a new tab)How to fix?
Upgrade Echo:latest webkit2gtk to version 2.20.2-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream webkit2gtk package and not the webkit2gtk package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
WebCore/platform/graphics/texmap/TextureMapperLayer.cpp in WebKit, as used in WebKitGTK+ prior to version 2.20.2, is vulnerable to a use after free for a WebCore::TextureMapperLayer object.
References
- https://advisory.echohq.com/cve/CVE-2018-12294
- https://www.cve.org/CVERecord?id=CVE-2018-12294
- http://packetstormsecurity.com/files/148200/WebKitGTK-Data-Leak-Code-Execution.html
- http://www.openwall.com/lists/oss-security/2018/06/14/1
- http://www.securityfocus.com/archive/1/542087/100/0/threaded
- https://bugs.webkit.org/show_bug.cgi?id=184729
- https://security.gentoo.org/glsa/201808-04
- https://trac.webkit.org/changeset/231300/webkit