[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities

mediumCVE-2026-31686 CVE-2026-31687 CVE-2026-31688 CVE-2026-31689 CVE-2026-31690 CVE-2026-31691

An attacker can exploit multiple vulnerabilities in the Linux Kernel to conduct unspecified attacks that may cause a denial-of-service condition, code execution, or memory corruption.

CSIRTS triage

vendor: Linux product: Linux KernelOtherRemote code execution Denial of service Memory corruption

What: An attacker can exploit multiple vulnerabilities in the Linux Kernel to conduct unspecified attacks that may cause a denial-of-service condition, code execution, or memory corruption.
Who is affected: Deployments of the Linux Kernel are affected.
Urgency: Remediation is medium urgency due to the potential for various attacks including code execution.
Action: Update to the latest version of 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: medium
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-2026-1294

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-2026-316860.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-316870.10% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-316890.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-316900.13% 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-2026-316910.11% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-31686	coverage & exploitation status	NVD · CVE.org
CVE-2026-31687	coverage & exploitation status	NVD · CVE.org
CVE-2026-31688	coverage & exploitation status	NVD · CVE.org
CVE-2026-31689	coverage & exploitation status	NVD · CVE.org
CVE-2026-31690	coverage & exploitation status	NVD · CVE.org
CVE-2026-31691	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownUSN-8668-1: Linux kernel (GCP) vulnerabilitiesubuntu
unknownUSN-8665-1: Linux kernel (Raspberry Pi) vulnerabilitiesubuntu
highCVE-2026-31688: driver core: enforce device_lock for driver_match_device()msrc
unknownUSN-8620-4: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
unknownUSN-8620-3: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
unknownUSN-8620-2: Linux kernel (Azure FIPS) vulnerabilitiesubuntu
highUSN-8620-1: Linux kernel vulnerabilitiesubuntu
highUSN-8619-1: Linux kernel (HWE) vulnerabilitiesubuntu
highUSN-8595-3: Linux kernel (AWS) vulnerabilitiesubuntu
highUSN-8574-3: Linux kernel vulnerabilitiesubuntu
highUSN-8610-1: Linux kernel (Azure CVM) vulnerabilitiesubuntu
highUSN-8575-3: Linux kernel vulnerabilitiesubuntu