RHSA-2025:23967 - 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):

• webkitgtk: webkitgtk: Use-after-free due to improper memory management (CVE-2025-43529)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43501)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43531)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43535)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43536)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43541)

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 - 2423166 - CVE-2025-43529 webkitgtk: webkitgtk: Use-after-free due to improper memory management
• BZ - 2423185 - CVE-2025-43501 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2423187 - CVE-2025-43531 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2423188 - CVE-2025-43535 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2423190 - CVE-2025-43536 webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash
• BZ - 2423191 - CVE-2025-43541 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash

CVEs

• CVE-2025-43501
• CVE-2025-43529
• CVE-2025-43531
• CVE-2025-43535
• CVE-2025-43536
• CVE-2025-43541

References

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