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AlmaLinux 10 : libvirt (ALSA-2026:75583)

high Nessus Plugin ID 363416

Synopsis

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

Description

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:75583 advisory.

 * libvirt: swtpm privilege escalation via symlink following (CVE-2026-63622)
 * libvirt: Integer overflow in NodeGetFreePages RPC handler leading to heap buffer overflow (CVE-2026-18917)


 Bug Fix(es) and Enhancement(s):

 * Live migration fails when virtio-vga becomes available, video device switches from virtio-gpu-pci to virtio-vga on target [almalinux-10.2.z] (JIRA:AlmaLinux-186019)
 * virsh dumpxml missing one SCSI disk when VMware VM has 64 disks per controller [almalinux-10.2.z] (JIRA:AlmaLinux-191267)
 * libvirt-guests does not work together with virtlockd on shutdown [almalinux-10.2.z] (JIRA:AlmaLinux-224982)
 * Expose guest-get-devices in libvirt-api [almalinux-10.2.z] (JIRA:AlmaLinux-243305)
 * allow hyperv pvpanic device to process Windows crash dump [almalinux-10.2.z] (JIRA:AlmaLinux-242547)

Tenable has extracted the preceding description block directly from the AlmaLinux 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://access.redhat.com/errata/RHSA-2026:75583

https://errata.almalinux.org/10/ALSA-2026-75583.html

Plugin Details

Severity: High

ID: 363416

File Name: alma_linux_ALSA-2026-75583.nasl

Version: 1.1

Type: Local

Published: 10/6/2026

Updated: 10/6/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.19

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-2026-63622

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:alma:linux:10, cpe:/o:alma:linux:10::appstream, cpe:/o:alma:linux:10::baseos, cpe:/o:alma:linux:10::highavailability, cpe:/o:alma:linux:10::nfv, cpe:/o:alma:linux:10::powertools, cpe:/o:alma:linux:10::realtime, cpe:/o:alma:linux:10::resilientstorage, cpe:/o:alma:linux:10::sap, cpe:/o:alma:linux:10::sap_hana, cpe:/o:alma:linux:10::supplementary, p-cpe:/a:alma:linux:libvirt-client-qemu, p-cpe:/a:alma:linux:libvirt-client, p-cpe:/a:alma:linux:libvirt-daemon-common, p-cpe:/a:alma:linux:libvirt-daemon-config-network, p-cpe:/a:alma:linux:libvirt-daemon-config-nwfilter, p-cpe:/a:alma:linux:libvirt-daemon-driver-interface, p-cpe:/a:alma:linux:libvirt-daemon-driver-network, p-cpe:/a:alma:linux:libvirt-daemon-driver-nodedev, p-cpe:/a:alma:linux:libvirt-daemon-driver-nwfilter, p-cpe:/a:alma:linux:libvirt-daemon-driver-qemu, p-cpe:/a:alma:linux:libvirt-daemon-driver-secret, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-core, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-disk, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-iscsi, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-logical, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-mpath, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-rbd, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage-scsi, p-cpe:/a:alma:linux:libvirt-daemon-driver-storage, p-cpe:/a:alma:linux:libvirt-daemon-kvm, p-cpe:/a:alma:linux:libvirt-daemon-lock, p-cpe:/a:alma:linux:libvirt-daemon-log, p-cpe:/a:alma:linux:libvirt-daemon-plugin-lockd, p-cpe:/a:alma:linux:libvirt-daemon-plugin-sanlock, p-cpe:/a:alma:linux:libvirt-daemon-proxy, p-cpe:/a:alma:linux:libvirt-daemon, p-cpe:/a:alma:linux:libvirt-devel, p-cpe:/a:alma:linux:libvirt-docs, p-cpe:/a:alma:linux:libvirt-libs, p-cpe:/a:alma:linux:libvirt-nss, p-cpe:/a:alma:linux:libvirt-ssh-proxy, p-cpe:/a:alma:linux:libvirt

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: 10/5/2026

Vulnerability Publication Date: 8/10/2026

Reference Information

CVE: CVE-2026-18917, CVE-2026-63622

CWE: 190, 59

RHSA: 2026:75583