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[UPDATE] [high] Linux Kernel: Multiple vulnerabilities

highCVE-2024-57950CVE-2025-21686CVE-2025-21687CVE-2025-21688CVE-2025-21689CVE-2025-21690
A local attacker can exploit multiple vulnerabilities in Linux Kernel to conduct a Denial of Service attack and escalate privileges.

CSIRTS triage

What
Multiple vulnerabilities allow a local attacker to conduct a Denial of Service attack and escalate privileges.
Who is affected
Local users of the Linux Kernel.
Urgency
Remediation is critical due to the high severity of potential Denial of Service and privilege escalation, although exploitation has not been reported.
Action
Apply the latest security updates to the Linux Kernel.

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

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Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
high
Published
2026-07-02
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-2025-0309

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2024-57950coverage & exploitation statusNVD · CVE.org
CVE-2025-21686coverage & exploitation statusNVD · CVE.org
CVE-2025-21687coverage & exploitation statusNVD · CVE.org
CVE-2025-21688coverage & exploitation statusNVD · CVE.org
CVE-2025-21689coverage & exploitation statusNVD · CVE.org
CVE-2025-21690coverage & exploitation statusNVD · CVE.org
CVE-2025-21691coverage & exploitation statusNVD · CVE.org
CVE-2025-21692coverage & exploitation statusNVD · CVE.org
CVE-2025-21693coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

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.

More from CERT-Bund (BSI) Security Advisories