[UPDATE] [high] Linux Kernel: Multiple Vulnerabilities allow Denial of Service
An attacker can exploit multiple vulnerabilities in Linux Kernel to perform a Denial of Service attack or perform other, not further specified attacks.
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.
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Details
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
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-40212 | coverage & exploitation status | NVD · CVE.org |
| CVE-2025-40213 | coverage & exploitation status | NVD · CVE.org |
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.
- medium[UPDATE] [mittel] Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriffcert-bund · 2026-09-07
- medium[UPDATE] [mittel] Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation und Denial of Servicecert-bund · 2026-09-07
- high[NEU] [hoch] Linux Kernel: Mehrere Schwachstellencert-bund · 2026-09-07
- medium[UPDATE] [mittel] Linux Kernel: Mehrere Schwachstellencert-bund · 2026-09-07
- medium[UPDATE] [mittel] Linux Kernel: Mehrere Schwachstellencert-bund · 2026-09-07
- medium[UPDATE] [mittel] Linux Kernel: Schwachstelle ermöglicht Denial of Servicecert-bund · 2026-09-07
More from CERT-Bund (BSI) Security Advisories
- high[UPDATE] [hoch] Mozilla Firefox und Thunderbird: Mehrere Schwachstellen2026-09-07
- high[UPDATE] [hoch] Mozilla Firefox, Firefox ESR und Thunderbird: Mehrere Schwachstellen2026-09-07
- high[UPDATE] [hoch] Google Chrome: Mehrere Schwachstellen2026-09-07
- medium[UPDATE] [mittel] Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff2026-09-07
- high[UPDATE] [hoch] Mozilla Firefox und Thunderbird: Mehrere Schwachstellen2026-09-07