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Linux Kernel Multiple Vulnerabilities Allow DoS, Security Bypass

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Summary

CERT-Bund issued advisory WID-SEC-2026-1252 warning of multiple vulnerabilities in the Linux Kernel (Open Source, version dated 22.04.2026) with a CVSS Base Score of 5.9 (medium) and Temporal Score of 5.2 (medium). The vulnerabilities allow remote or local attackers to perform denial of service attacks, bypass security measures, disclose information, cause other unspecified effects, and potentially execute code. Remote attack capability is not available. Mitigation measures are available.

“Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen, Sicherheitsmaßnahmen zu umgehen, Informationen offenzulegen, andere nicht näher spezifizierte Auswirkungen zu verursachen und möglicherweise Code auszuführen.”

BSI , verbatim from source
Published by BSI on wid.cert-bund.de . Detected, standardized, and enriched by GovPing. Review our methodology and editorial standards .

About this source

CERT-Bund is the German federal cybersecurity agency's incident response team, run by the BSI. Their advisory feed publishes vulnerability disclosures and active exploitation warnings for software in widespread enterprise use: VPN appliances, email servers, file transfer products, ERP systems, browsers, hypervisors. Around 280 advisories a month, each with a CVSS score, affected versions, and remediation guidance. The advisories are written in German but cover the same vulnerabilities that show up in CISA, NCSC-UK, and JPCERT bulletins, often hours earlier. Watch this if you patch enterprise software, run a SOC, or write detection rules. GovPing publishes each advisory with the affected vendor, CVSS score, and original CERT-Bund link.

What changed

CERT-Bund published security advisory WID-SEC-2026-1252 disclosing multiple vulnerabilities in the Linux Kernel affecting systems running the Open Source Linux Kernel version dated 22.04.2026. The vulnerabilities carry a CVSS Base Score of 5.9 (medium severity) and enable attackers to conduct denial of service attacks, circumvent security mechanisms, disclose information, cause unspecified effects, and potentially execute arbitrary code. Remote attack capability is not present. Mitigations are available.

Organizations running Linux-based systems should review available patches and apply mitigations promptly. System administrators and security teams should assess exposure to these vulnerabilities, prioritize patching based on their environment's attack surface, and monitor for relevant updates from Linux Kernel maintainers.

Archived snapshot

Apr 23, 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-2026-1252] Linux Kernel: Mehrere Schwachstellen CVSS Base Score 5.9 (mittel) CVSS Temporal Score 5.2 (mittel) Remoteangriff nein Datum 22.04.2026 Stand 23.04.2026 Mitigation ja

Betroffene Systeme

Betriebssystem

  • Linux

Produktbeschreibung

Der Kernel stellt den Kern des Linux Betriebssystems dar.

Produkte

22.04.2026
- Open Source Linux Kernel

Angriff

Angriff

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen, Sicherheitsmaßnahmen zu umgehen, Informationen offenzulegen, andere nicht näher spezifizierte Auswirkungen zu verursachen und möglicherweise Code auszuführen. CVE Informationen Versionshistorie Feedback zum Advisory geben

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Source document text, dates, docket IDs, and authority are extracted directly from BSI.

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Last updated

Classification

Agency
BSI
Published
April 22nd, 2026
Instrument
Guidance
Branch
Executive
Source language
de
Legal weight
Non-binding
Stage
Final
Change scope
Minor

Who this affects

Applies to
Technology companies Government agencies Manufacturers
Industry sector
5112 Software & Technology
Activity scope
Vulnerability disclosure Security patch management
Geographic scope
Germany DE

Taxonomy

Primary area
Cybersecurity
Operational domain
IT Security
Compliance frameworks
NIST CSF
Topics
Data Privacy Network Security

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