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AlmaLinux 9 : qemu-kvm (ALSA-2026:88421)

high Nessus Plugin ID 375858

Synopsis

The remote AlmaLinux host is missing a security update.

Description

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:88421 advisory.

 * qemu-kvm: qemu-guest-agent: Local privilege escalation via symlink attack in guest-ssh-add-authorized- keys (CVE-2026-12080)


 Bug Fix(es) and Enhancement(s):

 * qemu-img can't create a qcow2 overlay with 'data_file' feature on top of a file without destroying the original image [almalinux-9.8.z] (JIRA:AlmaLinux-164549)
 * live migration of a VM with a scsi3pr to a node that previously held a reservation on that disk fails.
 [almalinux-9.8.z] (JIRA:AlmaLinux-280223)
 * Fix pending QEMU issues for L1VH GA - QEMU [almalinux-9.8.z] (JIRA:AlmaLinux-283121)

Tenable has extracted the preceding description block directly from the AlmaLinux 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://access.redhat.com/errata/RHSA-2026:88421

https://errata.almalinux.org/9/ALSA-2026-88421.html

Plugin Details

Severity: High

ID: 375858

File Name: alma_linux_ALSA-2026-88421.nasl

Version: 1.1

Type: Local

Published: 11/4/2026

Updated: 11/4/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.52

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-2026-12080

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: cpe:/o:alma:linux:9, cpe:/o:alma:linux:9::appstream, cpe:/o:alma:linux:9::baseos, cpe:/o:alma:linux:9::crb, cpe:/o:alma:linux:9::highavailability, cpe:/o:alma:linux:9::nfv, cpe:/o:alma:linux:9::realtime, cpe:/o:alma:linux:9::resilientstorage, cpe:/o:alma:linux:9::sap, cpe:/o:alma:linux:9::sap_hana, cpe:/o:alma:linux:9::supplementary, p-cpe:/a:alma:linux:qemu-guest-agent, p-cpe:/a:alma:linux:qemu-img, p-cpe:/a:alma:linux:qemu-kvm-audio-pa, p-cpe:/a:alma:linux:qemu-kvm-block-blkio, p-cpe:/a:alma:linux:qemu-kvm-block-curl, p-cpe:/a:alma:linux:qemu-kvm-block-rbd, p-cpe:/a:alma:linux:qemu-kvm-common, p-cpe:/a:alma:linux:qemu-kvm-core, p-cpe:/a:alma:linux:qemu-kvm-device-display-virtio-gpu-ccw, p-cpe:/a:alma:linux:qemu-kvm-device-display-virtio-gpu-pci, p-cpe:/a:alma:linux:qemu-kvm-device-display-virtio-gpu, p-cpe:/a:alma:linux:qemu-kvm-device-display-virtio-vga, p-cpe:/a:alma:linux:qemu-kvm-device-usb-host, p-cpe:/a:alma:linux:qemu-kvm-device-usb-redirect, p-cpe:/a:alma:linux:qemu-kvm-docs, p-cpe:/a:alma:linux:qemu-kvm-tools, p-cpe:/a:alma:linux:qemu-kvm-ui-egl-headless, p-cpe:/a:alma:linux:qemu-kvm-ui-opengl, p-cpe:/a:alma:linux:qemu-kvm, p-cpe:/a:alma:linux:qemu-pr-helper

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/22/2026

Vulnerability Publication Date: 7/20/2026

Reference Information

CVE: CVE-2026-12080

CWE: 61

RHSA: 2026:88421