[NEW] [medium] Linux Kernel: Multiple vulnerabilities

mediumCVE-2026-68451 CVE-2026-68452 CVE-2026-68453 CVE-2026-68454

A local attacker can exploit multiple vulnerabilities in Linux Kernel to perform an unspecified attack, including possibly disclosure or manipulation of data or denial-of-service conditions.

CSIRTS triage

vendor: Linux product: Linux Kernel Denial of service Information disclosure

What: Multiple unspecified vulnerabilities in the Linux Kernel allow local attackers to disclose or manipulate data or cause denial-of-service conditions.
Who is affected: Systems running affected Linux Kernel versions with local attacker access.
Urgency: Medium severity; unconfirmed exploitation; remediation should be prioritized but not critical.
Action: Apply available kernel security updates and monitor vendor advisories for patched versions.

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: medium
Published: 2026-08-14
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-2026-2832

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-2026-684510.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-684520.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-684530.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-684540.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-68451	coverage & exploitation status	NVD · CVE.org
CVE-2026-68452	coverage & exploitation status	NVD · CVE.org
CVE-2026-68453	coverage & exploitation status	NVD · CVE.org
CVE-2026-68454	coverage & exploitation status	NVD · 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.

unknownUSN-8659-4: Linux kernel (Oracle) vulnerabilityubuntu · 2026-08-26
unknownUSN-8666-2: Linux kernel (Azure) vulnerabilitiesubuntu · 2026-08-25
unknownUSN-8630-5: Linux kernel (Raspberry Pi) vulnerabilitiesubuntu · 2026-08-25
unknownUSN-8658-3: Linux kernel vulnerabilitiesubuntu · 2026-08-25
unknownUSN-8643-4: Linux kernel vulnerabilitiesubuntu · 2026-08-25
unknownUSN-8659-3: Linux kernel (Azure) vulnerabilityubuntu · 2026-08-25