The following advisory data is extracted from:

https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_13780.json

Red Hat officially shut down their mailing list notifications October 10, 2023.  Due to this, Packet Storm has recreated the below data as a reference point to raise awareness.  It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.

- Packet Storm Staff




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Red Hat Security Advisory

Synopsis:           Important: webkit2gtk3 security update
Advisory ID:        RHSA-2025:13780-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2025:13780
Issue date:         2025-08-14
Revision:           03
CVE Names:          CVE-2025-6558
====================================================================

Summary: 

An update for webkit2gtk3 is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.




Description:

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

Security Fix(es):

* angle: insufficient input validation can cause undefined behavior (CVE-2025-6558)

* webkitgtk: A download?s origin may be incorrectly associated (CVE-2025-43240)

* webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-31273)

* webkitgtk: Processing maliciously crafted web content may lead to memory corruption (CVE-2025-31278)

* webkitgtk: Processing web content may lead to a denial-of-service (CVE-2025-43211)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43212)

* webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43216)

* webkitgtk: Processing maliciously crafted web content may disclose sensitive user information (CVE-2025-43227)

* webkitgtk: Processing maliciously crafted web content may disclose internal states of the app (CVE-2025-43265)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.


Solution:

https://access.redhat.com/articles/11258



CVEs:

CVE-2025-6558

References:

https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2380254
https://bugzilla.redhat.com/show_bug.cgi?id=2384385
https://bugzilla.redhat.com/show_bug.cgi?id=2386268
https://bugzilla.redhat.com/show_bug.cgi?id=2386269
https://bugzilla.redhat.com/show_bug.cgi?id=2386270
https://bugzilla.redhat.com/show_bug.cgi?id=2386271
https://bugzilla.redhat.com/show_bug.cgi?id=2386273
https://bugzilla.redhat.com/show_bug.cgi?id=2386274
https://bugzilla.redhat.com/show_bug.cgi?id=2386276