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RockyLinux 8 : xorg-x11-server (RLSA-2026:99865)

high Nessus Plugin ID 380995

Synopsis

The remote RockyLinux host is missing a security update.

Description

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:99865 advisory.

 * xorg-x11-server: xorg-x11-server: arbitrary code execution via out-of-bounds write in XKB keycode handling (CVE-2026-93520)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://bugzilla.redhat.com/show_bug.cgi?id=2545908

https://errata.rockylinux.org/RLSA-2026:99865

Plugin Details

Severity: High

ID: 380995

File Name: rocky_linux_RLSA-2026-99865.nasl

Version: 1.1

Type: Local

Published: 11/14/2026

Updated: 11/14/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.38

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-93520

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:rocky:linux:8, p-cpe:/a:rocky:linux:xorg-x11-server-common, p-cpe:/a:rocky:linux:xorg-x11-server-debuginfo, p-cpe:/a:rocky:linux:xorg-x11-server-debugsource, p-cpe:/a:rocky:linux:xorg-x11-server-devel, p-cpe:/a:rocky:linux:xorg-x11-server-source, p-cpe:/a:rocky:linux:xorg-x11-server-xdmx-debuginfo, p-cpe:/a:rocky:linux:xorg-x11-server-xdmx, p-cpe:/a:rocky:linux:xorg-x11-server-xephyr-debuginfo, p-cpe:/a:rocky:linux:xorg-x11-server-xephyr, p-cpe:/a:rocky:linux:xorg-x11-server-xnest-debuginfo, p-cpe:/a:rocky:linux:xorg-x11-server-xnest, p-cpe:/a:rocky:linux:xorg-x11-server-xorg-debuginfo, p-cpe:/a:rocky:linux:xorg-x11-server-xorg, p-cpe:/a:rocky:linux:xorg-x11-server-xvfb-debuginfo, p-cpe:/a:rocky:linux:xorg-x11-server-xvfb

Required KB Items: Host/local_checks_enabled, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/14/2026

Vulnerability Publication Date: 10/7/2026

Reference Information

CVE: CVE-2026-93520