Detections
Analytics
AlmaLinux 9 : libvirt (ALSA-2026:74424)
high Nessus Plugin ID 362946
Synopsis
The remote AlmaLinux host is missing one or more security updates.Description
The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:74424 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-9.8.z] (JIRA:AlmaLinux-186018)
* libvirt-guests does not work together with virtlockd on shutdown [almalinux-9.8.z] (JIRA:AlmaLinux-224986)
* Expose guest-get-devices in libvirt-api [almalinux-9.8.z] (JIRA:AlmaLinux-243306)
* allow hyperv pvpanic device to process Windows crash dump [almalinux-9.8.z] (JIRA:AlmaLinux-242549)
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
Plugin Details
Severity: High
ID: 362946
File Name: alma_linux_ALSA-2026-74424.nasl
Version: 1.1
Type: Local
Family: Alma Linux Local Security Checks
Published: 10/5/2026
Updated: 10/5/2026
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: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: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: 10/1/2026
Vulnerability Publication Date: 8/10/2026
Reference Information
CVE: CVE-2026-18917, CVE-2026-63622
RHSA: 2026:74424