SUSE SLED15: xen / xen-devel / xen-libs / xen-tools / xen-tools-domU / etc (SUSE-SU-2026:4090-1)

high Nessus Plugin ID 348432

Language:

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4090-1 advisory.

Update to version 4.20.3 (jsc#PED-8907).

Security issues fixed:

- CVE-2026-42493: x86 shadow paging is deprecated (bsc#1271528).
- CVE-2026-42494,CVE-2026-42495,CVE-2026-62423,CVE-2026-62424,CVE-2026-62425: buffer overruns in libfsimage iso9660 handling (bsc#1271530).
- CVE-2026-62426,CVE-2026-62427: sysctl and platform-op locks open to abuse (bsc#1271531).
- CVE-2026-62428: grant-table: type confusion in grant-copy (bsc#1271532).
- CVE-2026-62429: vNUMA domain cleanup may race other operations (bsc#1271534).
- CVE-2026-62430: x86: Out-of-bounds read in vRTC emulation (bsc#1271535).
- CVE-2026-62431: Viridian STIMER division by zero (bsc#1271536).
- CVE-2026-62432: evtchn: Race between FIFO expand and reset (bsc#1271537).
- CVE-2026-62433: correct buffer checks for DM_OP hypercalls (bsc#1271538).
- CVE-2026-62434: PoD: Don't try to reclaim special pages (bsc#1271539).
- CVE-2026-62437: x86: DMs may cause mem leak by IRQ binding (bsc#1276838).
- CVE-2026-79602: x86: improper handling of HVM emulation return codes (bsc#1276839).
- CVE-2026-79603: unconditionally do TLB flushing ahead of page scrubbing (bsc#1276841).
- pygrub is only supported in de-privileged mode (bsc#1271947).

Non security issue fixed:

- Xen: Missing upstream bug fixes (bsc#1027519).

Tenable has extracted the preceding description block directly from the SUSE 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.

Plugin Details

Severity: High

ID: 348432

File Name: suse_SU-2026-4090-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 9/21/2026

Updated: 9/21/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.92

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-62427

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

CVSS Score Source: CVE-2026-79602

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:xen-devel, p-cpe:/a:novell:suse_linux:xen-libs, p-cpe:/a:novell:suse_linux:xen-tools-domu, p-cpe:/a:novell:suse_linux:xen-tools-xendomains-wait-disk, p-cpe:/a:novell:suse_linux:xen-tools, p-cpe:/a:novell:suse_linux:xen

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/8/2026

Vulnerability Publication Date: 6/11/2026

Reference Information

CVE: CVE-2026-42493, CVE-2026-42494, CVE-2026-42495, CVE-2026-62423, CVE-2026-62424, CVE-2026-62425, CVE-2026-62426, CVE-2026-62427, CVE-2026-62428, CVE-2026-62429, CVE-2026-62430, CVE-2026-62431, CVE-2026-62432, CVE-2026-62433, CVE-2026-62434, CVE-2026-62437, CVE-2026-79602, CVE-2026-79603

IAVB: 2026-B-0151-S, 2026-B-0250

SuSE: SUSE-SU-2026:4090-1

Detections

Analytics