Proxmox Virtual Environment kernel bug can crash services

Published September 11, 2026

Proxmox Virtual Environment Kernel has a CERT-Bund advisory for 20 vulnerabilities. An attacker can exploit several vulnerabilities in the Linux Kernel to cause a denial of service condition or carry out other unspecified attacks.

Severity
Not scoredNo CVSS score recorded
Fix
Fixed in KernelFix recorded 3 days ago
Affected versions
affected versions
Affects
Proxmox Virtual Environment Kernel+1 more
Exploited
Not confirmedNo confirmation recorded

How it works

An attacker can exploit several vulnerabilities in the Linux Kernel to cause a denial of service condition or carry out other unspecified attacks.

What to do

Check your Proxmox Virtual Environment Kernel version. If it is older than Kernel, this advisory applies.

Update Proxmox Virtual Environment Kernel to Kernel or newer.

Technical details

CERT-Bund describes Proxmox Virtual Environment Kernel as Der Kernel stellt den Kern des Linux Betriebssystems dar. An attacker can exploit several vulnerabilities in the Linux Kernel to cause a denial of service condition or carry out other unspecified attacks. The advisory tracks CVE-2026-46316, CVE-2026-46317, CVE-2026-46318, CVE-2026-46319, CVE-2026-46320, CVE-2026-46321, CVE-2026-46322, CVE-2026-46323.

In CERT-Bund's CSAF data, the fixed version is Kernel. Affected operating systems listed by CERT-Bund: Linux.

References

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