RHSA-2025:14486 - Security Advisory

Topic

An update for webkit2gtk3 is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

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

For details on how to apply this update, which includes the changes described in this advisory, refer to:

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

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64

Fixes

• BZ - 2380254 - CVE-2025-6558 angle: insufficient input validation can cause undefined behavior
• BZ - 2384385 - CVE-2025-43240 webkitgtk: A download?s origin may be incorrectly associated
• BZ - 2386268 - CVE-2025-31273 webkitgtk: Processing maliciously crafted web content may lead to memory corruption
• BZ - 2386269 - CVE-2025-31278 webkitgtk: Processing maliciously crafted web content may lead to memory corruption
• BZ - 2386270 - CVE-2025-43211 webkitgtk: Processing web content may lead to a denial-of-service
• BZ - 2386271 - CVE-2025-43212 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
• BZ - 2386273 - CVE-2025-43216 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
• BZ - 2386274 - CVE-2025-43227 webkitgtk: Processing maliciously crafted web content may disclose sensitive user information
• BZ - 2386276 - CVE-2025-43265 webkitgtk: Processing maliciously crafted web content may disclose internal states of the app

CVEs

• CVE-2025-6558
• CVE-2025-31273
• CVE-2025-31278
• CVE-2025-43211
• CVE-2025-43212
• CVE-2025-43216
• CVE-2025-43227
• CVE-2025-43240
• CVE-2025-43265

References

• https://access.redhat.com/security/updates/classification/#important