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Priority review Guidance Added Final

Linux Kernel Multiple Vulnerabilities - CVSS 7.3 DoS Bypass

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Summary

CERT-Bund issued a security advisory regarding multiple vulnerabilities in the Linux Kernel affecting Microsoft Azure Linux azl3. The vulnerabilities carry a CVSS Base Score of 7.3 (high) and CVSS Temporal Score of 6.6 (medium), with remote attack capability confirmed. An attacker could exploit these flaws to execute denial of service attacks or bypass security mechanisms. Mitigation measures are available.

What changed

CERT-Bund published a security advisory detailing multiple high-severity vulnerabilities in the Linux Kernel. The vulnerabilities affect the core operating system component and Microsoft Azure Linux azl3 distribution, with CVSS scores indicating significant risk. Remote exploitation is possible, enabling denial of service attacks and security mechanism bypass.

Organizations operating Linux-based systems should prioritize vulnerability assessment and patching efforts. IT security teams must monitor for available patches from Linux distribution vendors and Microsoft, and implement compensating controls if immediate patching is not feasible. The advisory confirms mitigation measures exist, though specific CVE identifiers and patch versions require follow-up through official channels.

What to do next

  1. Identify Linux Kernel systems and Azure Linux azl3 deployments within your infrastructure
  2. Apply available patches or mitigations for the identified vulnerabilities
  3. Review and update incident response procedures for potential DoS exploitation

Archived snapshot

Apr 7, 2026

GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.

[WID-SEC-2026-0985] Linux Kernel: Mehrere Schwachstellen CVSS Base Score 7.3 (hoch) CVSS Temporal Score 6.6 (mittel) Remoteangriff ja Datum 06.04.2026 Stand 07.04.2026 Mitigation ja

Betroffene Systeme

Betriebssystem

  • Linux

Produktbeschreibung

Der Kernel stellt den Kern des Linux Betriebssystems dar.

Produkte

06.04.2026
- Open Source Linux Kernel

  • Microsoft Azure Linux azl3

Angriff

Angriff

Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um unter anderem einen Denial of Service-Angriff auszuführen oder um Sicherheitsmechanismen zu umgehen. CVE Informationen Versionshistorie Feedback zum Advisory geben

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Last updated

Classification

Agency
CERT-Bund
Published
April 6th, 2026
Instrument
Guidance
Legal weight
Non-binding
Stage
Final
Change scope
Substantive
Document ID
WID-SEC-2026-0985

Who this affects

Applies to
Technology companies Government agencies
Industry sector
5112 Software & Technology
Activity scope
Vulnerability assessment Security patching System hardening
Geographic scope
Germany DE

Taxonomy

Primary area
Cybersecurity
Operational domain
IT Security
Compliance frameworks
NIST CSF
Topics
Data Privacy Software & Technology

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