[UPDATE] [high] Linux Kernel: Multiple Vulnerabilities allow Denial of Service

CSIRTS triage

What

Multiple vulnerabilities in Linux Kernel allow denial of service and other unspecified attacks.

Who is affected

Any system running an affected Linux Kernel version.

Urgency

High severity; kernel-level DoS vulnerability with unspecified additional impacts requires immediate action.

Action

Update Linux Kernel to the latest patched version addressing CVE-2025-40212 and CVE-2025-40213.

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

Details

Source

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

Severity

high

Published

2026-08-25

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-2025-2672

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-2025-402120.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2025-402130.14% 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

More from CERT-Bund (BSI) Security Advisories

• high[NEW] [high] Linux Kernel: Multiple vulnerabilities2026-08-25
• medium[NEW] [medium] libTIFF: Multiple Vulnerabilities2026-08-25
• high[NEW] [high] Contao: Multiple Vulnerabilities2026-08-25
• medium[NEW] [medium] Django: Multiple Vulnerabilities2026-08-25
• high[NEW] [high] Red Hat Enterprise Linux (Apicurio Registry): Multiple Vulnerabilities2026-08-25