RHSA-2026:84583

Vulnerability from csaf_redhat - Published: 2026-10-19 04:20 - Updated: 2026-10-19 04:38
Summary
Red Hat Security Advisory: webkit2gtk3 security, bug fix, and enhancement update
Severity
Critical
Notes
Topic: An update for webkit2gtk3 is now available for Red Hat Enterprise Linux 9. 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.
Details: 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 9 [rhel-9.8.z] (JIRA:RHEL-274394) 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.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2026-87500

A flaw was found in ANGLE, a graphics engine used in Google Chrome. This vulnerability, caused by improper validation of an array index, allows a remote attacker to execute arbitrary code outside of the browser's security sandbox. Exploitation can occur when a user visits a specially crafted HTML page. This could lead to a complete compromise of the affected system.

9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CWE-787 - Out-of-bounds Write
Affected products
Product Identifier Version Remediation
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-0:2.54.1-1.el9_8.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-0:2.54.1-1.el9_8.i686 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-0:2.54.1-1.el9_8.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-0:2.54.1-1.el9_8.s390x —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-0:2.54.1-1.el9_8.src —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-0:2.54.1-1.el9_8.x86_64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-debuginfo-0:2.54.1-1.el9_8.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-debuginfo-0:2.54.1-1.el9_8.i686 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-debuginfo-0:2.54.1-1.el9_8.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-debuginfo-0:2.54.1-1.el9_8.s390x —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-debuginfo-0:2.54.1-1.el9_8.x86_64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-debugsource-0:2.54.1-1.el9_8.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-debugsource-0:2.54.1-1.el9_8.i686 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-debugsource-0:2.54.1-1.el9_8.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-debugsource-0:2.54.1-1.el9_8.s390x —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-debugsource-0:2.54.1-1.el9_8.x86_64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-devel-0:2.54.1-1.el9_8.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-devel-0:2.54.1-1.el9_8.i686 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-devel-0:2.54.1-1.el9_8.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-devel-0:2.54.1-1.el9_8.s390x —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-devel-0:2.54.1-1.el9_8.x86_64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-devel-debuginfo-0:2.54.1-1.el9_8.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-devel-debuginfo-0:2.54.1-1.el9_8.i686 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-devel-debuginfo-0:2.54.1-1.el9_8.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-devel-debuginfo-0:2.54.1-1.el9_8.s390x —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-devel-debuginfo-0:2.54.1-1.el9_8.x86_64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-0:2.54.1-1.el9_8.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-0:2.54.1-1.el9_8.i686 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-0:2.54.1-1.el9_8.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-0:2.54.1-1.el9_8.s390x —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-0:2.54.1-1.el9_8.x86_64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-debuginfo-0:2.54.1-1.el9_8.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-debuginfo-0:2.54.1-1.el9_8.i686 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-debuginfo-0:2.54.1-1.el9_8.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-debuginfo-0:2.54.1-1.el9_8.s390x —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-debuginfo-0:2.54.1-1.el9_8.x86_64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-devel-0:2.54.1-1.el9_8.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-devel-0:2.54.1-1.el9_8.i686 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-devel-0:2.54.1-1.el9_8.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-devel-0:2.54.1-1.el9_8.s390x —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-devel-0:2.54.1-1.el9_8.x86_64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-devel-debuginfo-0:2.54.1-1.el9_8.aarch64 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-devel-debuginfo-0:2.54.1-1.el9_8.i686 —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-devel-debuginfo-0:2.54.1-1.el9_8.ppc64le —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-devel-debuginfo-0:2.54.1-1.el9_8.s390x —
Vendor Fix fix
Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:webkit2gtk3-jsc-devel-debuginfo-0:2.54.1-1.el9_8.x86_64 —
Vendor Fix fix
Threats
Impact Critical
CVE-2026-87512

A flaw was found in chromium-browser. A use-after-free vulnerability in ANGLE allows a remote attacker to execute arbitrary code outside the sandbox. This can be exploited by enticing a user to visit a specially crafted HTML page, leading to a complete compromise of the affected system.

9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 46 products, the same list as for CVE-2026-87500
Threats
Impact Critical
CVE-2026-87586

A flaw was found in ANGLE, a component of Google Chrome. This out-of-bounds read vulnerability allows a remote attacker to read memory outside of the browser's security sandbox. The flaw can be exploited by enticing a user to visit a specially crafted HTML page. The primary consequence is the unauthorized disclosure of sensitive information.

7.4 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
CWE-125 - Out-of-bounds Read
Affected products
Fixed 46 products, the same list as for CVE-2026-87500
Threats
Impact Important
CVE-2026-87596

A flaw was found in ANGLE, a component of Google Chrome. A remote attacker could exploit an out-of-bounds read vulnerability by enticing a user to visit a specially crafted HTML page. This could allow the attacker to read sensitive memory outside of the browser's security sandbox, leading to information disclosure.

7.4 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
CWE-125 - Out-of-bounds Read
Affected products
Fixed 46 products, the same list as for CVE-2026-87500
Threats
Impact Important
CVE-2026-87602

A flaw was found in ANGLE in Google Chrome. A remote attacker could exploit an out-of-bounds read vulnerability by enticing a user to visit a specially crafted HTML page. This could potentially allow the attacker to read memory outside of the browser's security sandbox, leading to information disclosure.

4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CWE-125 - Out-of-bounds Read
Affected products
Fixed 46 products, the same list as for CVE-2026-87500
Threats
Impact Moderate
CVE-2026-87604

A flaw was found in ANGLE, a component of Google Chrome. This out-of-bounds read vulnerability could allow a remote attacker, who has already compromised the browser's renderer process, to potentially execute arbitrary code outside of the browser's security sandbox. This exploitation occurs when a user visits a specially crafted HTML page.

9.0 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CWE-125 - Out-of-bounds Read
Affected products
Fixed 46 products, the same list as for CVE-2026-87500
Threats
Impact Important
CVE-2026-87621

A flaw was found in ANGLE, a component of Google Chrome. This out-of-bounds write vulnerability allows a remote attacker to potentially execute arbitrary code. By tricking a user into visiting a specially crafted HTML page, an attacker could bypass the browser's security sandbox and execute malicious code on the system.

9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CWE-787 - Out-of-bounds Write
Affected products
Fixed 46 products, the same list as for CVE-2026-87500
Threats
Impact Critical
CVE-2026-87648

A flaw was found in ANGLE, a component of Google Chrome. A remote attacker who has compromised the renderer process could exploit a use-after-free vulnerability by crafting a malicious HTML page. This could potentially allow the attacker to execute arbitrary code outside of the sandbox, leading to a compromise of the system.

9.0 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CWE-825 - Expired Pointer Dereference
Affected products
Fixed 46 products, the same list as for CVE-2026-87500
Threats
Impact Important
CVE-2026-87654

A flaw was found in Chromium's ANGLE component. A remote attacker could exploit a buffer overflow vulnerability by enticing a user to visit a specially crafted HTML page. This could lead to the execution of arbitrary code outside the browser's security sandbox, potentially compromising the affected system.

9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected products
Fixed 46 products, the same list as for CVE-2026-87500
Threats
Impact Critical
CVE-2026-91720

An uninitialized resource flaw was found in the ANGLE component of the Chromium browser. Upstream bug(s): https://code.google.com/p/chromium/issues/detail?id=523470135

7.4 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
CWE-824 - Access of Uninitialized Pointer
Affected products
Fixed 46 products, the same list as for CVE-2026-87500
Threats
Impact Important
CVE-2026-91738

An improper input validation flaw was found in the ANGLE component of the Chromium browser. Upstream bug(s): https://code.google.com/p/chromium/issues/detail?id=536450979

9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CWE-1286 - Improper Validation of Syntactic Correctness of Input
Affected products
Fixed 46 products, the same list as for CVE-2026-87500
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:84583 self
https://access.redhat.com/security/updates/classi… external
https://bugzilla.redhat.com/show_bug.cgi?id=2530272 external
https://bugzilla.redhat.com/show_bug.cgi?id=2530296 external
https://bugzilla.redhat.com/show_bug.cgi?id=2530305 external
https://bugzilla.redhat.com/show_bug.cgi?id=2530333 external
https://bugzilla.redhat.com/show_bug.cgi?id=2530389 external
https://bugzilla.redhat.com/show_bug.cgi?id=2530396 external
https://bugzilla.redhat.com/show_bug.cgi?id=2530447 external
https://bugzilla.redhat.com/show_bug.cgi?id=2530458 external
https://bugzilla.redhat.com/show_bug.cgi?id=2530475 external
https://bugzilla.redhat.com/show_bug.cgi?id=2534404 external
https://bugzilla.redhat.com/show_bug.cgi?id=2534673 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-87500 self
https://bugzilla.redhat.com/show_bug.cgi?id=2530296 external
https://www.cve.org/CVERecord?id=CVE-2026-87500 external
https://nvd.nist.gov/vuln/detail/CVE-2026-87500 external
https://chromereleases.googleblog.com/2026/09/sta… external
https://issues.chromium.org/issues/540019091 external
https://access.redhat.com/security/cve/CVE-2026-87512 self
https://bugzilla.redhat.com/show_bug.cgi?id=2530389 external
https://www.cve.org/CVERecord?id=CVE-2026-87512 external
https://nvd.nist.gov/vuln/detail/CVE-2026-87512 external
https://issues.chromium.org/issues/541715128 external
https://access.redhat.com/security/cve/CVE-2026-87586 self
https://bugzilla.redhat.com/show_bug.cgi?id=2530458 external
https://www.cve.org/CVERecord?id=CVE-2026-87586 external
https://nvd.nist.gov/vuln/detail/CVE-2026-87586 external
https://issues.chromium.org/issues/536598187 external
https://access.redhat.com/security/cve/CVE-2026-87596 self
https://bugzilla.redhat.com/show_bug.cgi?id=2530272 external
https://www.cve.org/CVERecord?id=CVE-2026-87596 external
https://nvd.nist.gov/vuln/detail/CVE-2026-87596 external
https://issues.chromium.org/issues/536434693 external
https://access.redhat.com/security/cve/CVE-2026-87602 self
https://bugzilla.redhat.com/show_bug.cgi?id=2530447 external
https://www.cve.org/CVERecord?id=CVE-2026-87602 external
https://nvd.nist.gov/vuln/detail/CVE-2026-87602 external
https://issues.chromium.org/issues/541546782 external
https://access.redhat.com/security/cve/CVE-2026-87604 self
https://bugzilla.redhat.com/show_bug.cgi?id=2530475 external
https://www.cve.org/CVERecord?id=CVE-2026-87604 external
https://nvd.nist.gov/vuln/detail/CVE-2026-87604 external
https://issues.chromium.org/issues/536648007 external
https://access.redhat.com/security/cve/CVE-2026-87621 self
https://bugzilla.redhat.com/show_bug.cgi?id=2530333 external
https://www.cve.org/CVERecord?id=CVE-2026-87621 external
https://nvd.nist.gov/vuln/detail/CVE-2026-87621 external
https://issues.chromium.org/issues/536664909 external
https://access.redhat.com/security/cve/CVE-2026-87648 self
https://bugzilla.redhat.com/show_bug.cgi?id=2530396 external
https://www.cve.org/CVERecord?id=CVE-2026-87648 external
https://nvd.nist.gov/vuln/detail/CVE-2026-87648 external
https://issues.chromium.org/issues/513048243 external
https://access.redhat.com/security/cve/CVE-2026-87654 self
https://bugzilla.redhat.com/show_bug.cgi?id=2530305 external
https://www.cve.org/CVERecord?id=CVE-2026-87654 external
https://nvd.nist.gov/vuln/detail/CVE-2026-87654 external
https://issues.chromium.org/issues/536444790 external
https://access.redhat.com/security/cve/CVE-2026-91720 self
https://bugzilla.redhat.com/show_bug.cgi?id=2534673 external
https://www.cve.org/CVERecord?id=CVE-2026-91720 external
https://nvd.nist.gov/vuln/detail/CVE-2026-91720 external
https://chromereleases.googleblog.com/2026/09/sta… external
https://issues.chromium.org/issues/523470135 external
https://access.redhat.com/security/cve/CVE-2026-91738 self
https://bugzilla.redhat.com/show_bug.cgi?id=2534404 external
https://www.cve.org/CVERecord?id=CVE-2026-91738 external
https://nvd.nist.gov/vuln/detail/CVE-2026-91738 external
https://issues.chromium.org/issues/536450979 external
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        {
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          "details": "Important"
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      ],
      "title": "chromium-browser: angle: chromium-browser: Improper input validation in ANGLE"
    }
  ]
}



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