VDB
RHSA-2026:85193
RHSA-2026:85193
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-Xwayland-debuginfo-0:24.1.9-4.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.4.src as a component of Red Hat Enterprise Linux AppStream (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-devel-0:24.1.9-4.el9_8.4.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.4.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-devel-0:24.1.9-4.el9_8.4.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.4.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-devel-0:24.1.9-4.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.4.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.4.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.4.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.4.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-debugsource-0:24.1.9-4.el9_8.4.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-debuginfo-0:24.1.9-4.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | 0:24.1.9-4.el9_8.4 |
| Red Hat | xorg-x11-server-Xwayland-0:24.1.9-4.el9_8.4.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) | 0:24.1.9-4.el9_8.4 |
…and 9 more
Timeline
- Oct 19, 2026 CVE Published
- Oct 29, 2026 CVE Updated
- Oct 29, 2026 Distribution Patch
- Oct 29, 2026 Distribution Patch
- Oct 29, 2026 Security Advisory
- Oct 29, 2026 Security Advisory
- Oct 29, 2026 Security Advisory
- Oct 29, 2026 Security Advisory
- Oct 29, 2026 Security Advisory
- Oct 29, 2026 Security Advisory
- Oct 29, 2026 Security Advisory
- Oct 29, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:85193 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2545161 issue
- 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://bugzilla.redhat.com/show_bug.cgi?id=2545178 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2545246 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2545860 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2545887 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2545908 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_85193.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-2026-93516 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-93516 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-93516 advisory
- https://access.redhat.com/security/cve/CVE-2026-93517 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-93517 advisory
…and 19 more