[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service

CSIRTS triage

What

Multiple vulnerabilities in the Linux Kernel allow local attackers to perform denial-of-service attacks.

Who is affected

Local deployments of the Linux Kernel are affected by these vulnerabilities.

Urgency

Remediation is important as these vulnerabilities can lead to service disruptions.

Action

Update to the latest version of the Linux Kernel.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

medium

Published

2026-08-27

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-2407

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2023-537330.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2025-400180.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2025-400190.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 19% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2025-400200.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2025-400210.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 9% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2025-400220.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2025-400230.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2025-400240.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• unknownexploitedSiemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFPcisa

Recent advisories for Linux Kernel

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• unknownUSN-8748-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu · 2026-09-10
• medium[UPDATE] [mittel] Linux Kernel: Schwachstelle ermöglicht Privilegieneskalationcert-bund · 2026-09-10
• medium[UPDATE] [mittel] Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriffcert-bund · 2026-09-10
• medium[UPDATE] [mittel] Linux Kernel: Schwachstelle ermöglicht Denial of Servicecert-bund · 2026-09-10
• mediumexploited[UPDATE] [mittel] Linux Kernel: Mehrere Schwachstellencert-bund · 2026-09-10
• medium[UPDATE] [mittel] Linux Kernel: Mehrere Schwachstellencert-bund · 2026-09-10

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