Detections
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Oracle Linux 7 : tigervnc (ELSA-2026-22456)

critical Nessus Plugin ID 326275

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-22456 advisory.

 - Fix CVE-2026-33999, CVE-2026-34000, CVE-2026-34001, CVE-2026-34002, CVE-2026-34003 and CVE-2026-34352 [Orabug: 39478221]
 - Fix CVE-2025-62229: xorg-x11-server: Use-after-free in XPresentNotify structures creation [Orabug:
 38694278]
 - Fix CVE-2025-62230: xorg-x11-server: Use-after-free in Xkb client resource removal
 - Fix CVE-2025-62231: xorg-x11-server: Value overflow in Xkb extension XkbSetCompatMap()
 - Fix CVE-2025-49175, CVE-2025-49176, CVE-2025-49178, CVE-2025-49179, CVE-2025-49180 [Orabug: 38157695]
 - Fix CVE-2025-26594 xorg-x11-server Use-after-free of the root cursor [Orabug: 37712725]
 - Fix CVE-2025-26595 xorg-x11-server Buffer overflow in XkbVModMaskText()
 - Fix CVE-2025-26596 xorg-x11-server Heap overflow in XkbWriteKeySyms()
 - Fix CVE-2025-26597 xorg-x11-server Buffer overflow in XkbChangeTypesOfKey()
 - Fix CVE-2025-26598 xorg-x11-server Out-of-bounds write in CreatePointerBarrierClient()
 - Fix CVE-2025-26599 xorg-x11-server Use of uninitialized pointer in compRedirectWindow()
 - Fix CVE-2025-26600 xorg-x11-server Use-after-free in PlayReleasedEvents()

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

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

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2026-22456.html

Plugin Details

Severity: Critical

ID: 326275

File Name: oraclelinux_ELSA-2026-22456.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/10/2026

Updated: 7/10/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.46

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-34352

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:tigervnc-icons, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:tigervnc-server, p-cpe:/a:oracle:linux:tigervnc-server-minimal, p-cpe:/a:oracle:linux:tigervnc, p-cpe:/a:oracle:linux:tigervnc-license, p-cpe:/a:oracle:linux:tigervnc-server-module, p-cpe:/a:oracle:linux:tigervnc-server-applet

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 7/9/2026

Vulnerability Publication Date: 3/26/2026

Reference Information

CVE: CVE-2026-33999, CVE-2026-34000, CVE-2026-34001, CVE-2026-34002, CVE-2026-34003, CVE-2026-34352