RHSA-2026:95590 - 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 Critical. 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):

• chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via out-of-bounds read (CVE-2026-87596)
• chromium-browser: angle: ANGLE in Google Chrome: Arbitrary code execution via crafted HTML page (CVE-2026-87500)
• chromium-browser: angle: Chromium: Arbitrary code execution via buffer overflow in ANGLE (CVE-2026-87654)
• chromium-browser: angle: Google Chrome (ANGLE): Arbitrary Code Execution vulnerability (CVE-2026-87621)
• chromium-browser: angle: Chromium-browser: Arbitrary code execution via use-after-free vulnerability in ANGLE (CVE-2026-87512)
• chromium-browser: angle: ANGLE: Arbitrary code execution in Google Chrome due to use-after-free (CVE-2026-87648)
• chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via crafted HTML page (CVE-2026-87602)
• chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via crafted HTML page (CVE-2026-87586)
• chromium-browser: angle: ANGLE in Google Chrome: Arbitrary code execution via out-of-bounds read (CVE-2026-87604)
• chromium-browser: angle: chromium-browser: Improper input validation in ANGLE (CVE-2026-91738)
• chromium-browser: angle: chromium-browser: Uninitialized resource in ANGLE (CVE-2026-91720)

Bug Fix(es) and Enhancement(s):

• webkit2gtk3 2.54.0 regression breaks Eclipse IDE WebKit-based views on CentOS Stream 8 (JIRA:RHEL-299544)

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 Life Cycle Long Life 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64

Fixes

• BZ - 2530272 - CVE-2026-87596 chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via out-of-bounds read
• BZ - 2530296 - CVE-2026-87500 chromium-browser: angle: ANGLE in Google Chrome: Arbitrary code execution via crafted HTML page
• BZ - 2530305 - CVE-2026-87654 chromium-browser: angle: Chromium: Arbitrary code execution via buffer overflow in ANGLE
• BZ - 2530333 - CVE-2026-87621 chromium-browser: angle: Google Chrome (ANGLE): Arbitrary Code Execution vulnerability
• BZ - 2530389 - CVE-2026-87512 chromium-browser: angle: Chromium-browser: Arbitrary code execution via use-after-free vulnerability in ANGLE
• BZ - 2530396 - CVE-2026-87648 chromium-browser: angle: ANGLE: Arbitrary code execution in Google Chrome due to use-after-free
• BZ - 2530447 - CVE-2026-87602 chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via crafted HTML page
• BZ - 2530458 - CVE-2026-87586 chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via crafted HTML page
• BZ - 2530475 - CVE-2026-87604 chromium-browser: angle: ANGLE in Google Chrome: Arbitrary code execution via out-of-bounds read
• BZ - 2534404 - CVE-2026-91738 chromium-browser: angle: chromium-browser: Improper input validation in ANGLE
• BZ - 2534673 - CVE-2026-91720 chromium-browser: angle: chromium-browser: Uninitialized resource in ANGLE

CVEs

• CVE-2026-87500
• CVE-2026-87512
• CVE-2026-87586
• CVE-2026-87596
• CVE-2026-87602
• CVE-2026-87604
• CVE-2026-87621
• CVE-2026-87648
• CVE-2026-87654
• CVE-2026-91720
• CVE-2026-91738

References

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