This update for webkit2gtk3 to version 2.20.5 fixes the following issues:
Security issue fixed:
CVE-2018-12911: Fix off-by-one in xdgmimegetsimpleglobs (bsc#1101999).
CVE-2018-4261, CVE-2018-4262, CVE-2018-4263, CVE-2018-4264, CVE-2018-4265,
CVE-2018-4267, CVE-2018-4272, CVE-2018-4284: Processing maliciously crafted
web content may lead to arbitrary code execution. A memory corruption issue
was addressed with improved memory handling.
CVE-2018-4266: A malicious website may be able to cause a denial of service.
A race condition was addressed with additional validation.
CVE-2018-4270, CVE-2018-4271, CVE-2018-4273: Processing maliciously crafted
web content may lead to an unexpected application crash. A memory corruption
issue was addressed with improved input validation.
CVE-2018-4278: A malicious website may exfiltrate audio data cross-origin.
Sound fetched through audio elements may be exfiltrated cross-origin. This
issue was addressed with improved audio taint tracking.
Other bugs fixed:
Fix rendering artifacts in some web sites due to a bug introduced in 2.20.4.
Fix a crash when leaving accelerated compositing mode.
Fix non-deterministic build failure due to missing JavaScriptCore/JSContextRef.h.