VDB
RHSA-2026:82015
RHSA-2026:82015
PUBLISHED
CVSS 7.800000190734863 HIGH
A flaw was found in the X.Org X Server and XWayland. An error handling issue in the X Keyboard Extension (XKB) geometry processing fails to clear a memory pointer after an allocation failure, leading to a double-free condition during cleanup. A local user can exploit this vulnerability by sending a specially crafted request to the display server. This can cause memory corruption, potentially resulting in a Denial of Service (DoS) or arbitrary code execution with elevated privileges.
Risk Scores
CVSS 3.1
7.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | xorg-x11-server-Xdmx-0:1.20.11-34.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-debugsource-0:1.20.11-34.el9_8.4.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xorg-debuginfo-0:1.20.11-34.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xvfb-debuginfo-0:1.20.11-34.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xorg-debuginfo-0:1.20.11-34.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-devel-0:1.20.11-34.el9_8.4.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xvfb-debuginfo-0:1.20.11-34.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-devel-0:1.20.11-34.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-debuginfo-0:1.20.11-34.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xephyr-debuginfo-0:1.20.11-34.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xvfb-debuginfo-0:1.20.11-34.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xdmx-debuginfo-0:1.20.11-34.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xdmx-debuginfo-0:1.20.11-34.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xephyr-debuginfo-0:1.20.11-34.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xdmx-debuginfo-0:1.20.11-34.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-debugsource-0:1.20.11-34.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-debugsource-0:1.20.11-34.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xnest-debuginfo-0:1.20.11-34.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xvfb-debuginfo-0:1.20.11-34.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 1.20.11-34.el9 |
| Red Hat | xorg-x11-server-Xnest-debuginfo-0:1.20.11-34.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 1.20.11-34.el9 |
…and 74 more
Timeline
- Oct 13, 2026 CVE Published
- Oct 21, 2026 CVE Updated
- Oct 21, 2026 Distribution Patch
- Oct 21, 2026 Distribution Patch
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:82015 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2545164 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2545174 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2545177 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_82015.json advisory
- https://access.redhat.com/security/cve/CVE-2026-88812 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-88812 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-88812 advisory
- https://access.redhat.com/security/cve/CVE-2026-93521 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-93521 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-93521 advisory
- https://access.redhat.com/security/cve/CVE-2026-93523 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-93523 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-93523 advisory