CVE-2018-12294

HIGH 8.8CVE-2018-12294 · Published 19/06/2018 · updated 17/06/2026

In short

CVE-2018-12294 is a HIGH (CVSS 8.8) vulnerability affecting webkitgtk+ (webkit).
Chance of exploitation in the next 30 days (EPSS): 2.3%, higher than 83.5% of all vulnerabilities.
Fix: update to 2.20.2 or later.

Package	Affected versions	Patched versions
webkitgtk+ webkit	`< 2.20.2`	`2.20.2`

Description

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

packetstormsecurity.com/files/148200/WebKitGTK-Data-Leak-Code-Execution.html · Third Party Advisory
openwall.com/lists/oss-security/2018/06/14/1 · Mailing List
securityfocus.com/archive/1/542087/100/0/threaded
bugs.webkit.org/show_bug.cgi · Permissions Required
security.gentoo.org/glsa/201808-04
trac.webkit.org/changeset/231300/webkit · Vendor Advisory

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Package

Affected versions

Patched versions

webkitgtk+

webkit

< 2.20.2

2.20.2

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