Multiple vulnerabilities in Debian Linux kernel (August 21, 2026)

unknownCVE-2026-53613 CVE-2026-53614 CVE-2026-27456 CVE-2026-13595 CVE-2026-53612

Multiple vulnerabilities have been discovered in Debian Linux kernel. They allow an attacker to cause privilege escalation.

CSIRTS triage

vendor: Debian product: Linux kernel Privilege escalation

What: Multiple kernel vulnerabilities enable privilege escalation.
Who is affected: Debian Linux kernel users running affected versions.
Urgency: Unknown severity but privilege escalation impact is critical; apply updates promptly.
Action: Install the latest Debian Linux kernel security update (August 21, 2026).

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

⚡ Watch Linux kernel

Get an email when a new Linux kernel advisory drops — max one per day, one-click unsubscribe.

Details

Source: CERT-FR Avis de sécurité (FR · national-cert · site)
Severity: unknown
Published: 2026-08-21
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1068/

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-2026-274560.12% 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-2026-135950.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53613	coverage & exploitation status	NVD · CVE.org
CVE-2026-53614	coverage & exploitation status	NVD · CVE.org
CVE-2026-27456	coverage & exploitation status	NVD · CVE.org
CVE-2026-13595	coverage & exploitation status	NVD · CVE.org
CVE-2026-53612	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

high[NEW] [high] util-linux: Multiple vulnerabilitiescert-bund
medium[UPDATE] [medium] util-linux: Vulnerability enables denial of service and information disclosurecert-bund
unknownDSA-6442-1 util-linux - security updatedebian
unknownMultiple vulnerabilities in Microsoft Azure Linux (July 7, 2026)cert-fr-avis
mediumCVE-2026-13595: A flaw was found in the libblkid library of util-linux. During nested partition probing, the B…nvd
mediumCVE-2026-13595: Util-linux: util-linux: heap use-after-free in libblkid nested partition probingmsrc

Recent advisories for Debian 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.

unknownMultiple vulnerabilities in Debian LTS Linux kernel (August 21, 2026)cert-fr-avis · 2026-08-21
unknownMultiple vulnerabilities in Debian LTS Linux kernel (August 14, 2026)cert-fr-avis · 2026-08-14
unknownMultiple vulnerabilities in Debian Linux kernel (August 14, 2026)cert-fr-avis · 2026-08-14
unknownMultiple vulnerabilities in Debian Linux kernel (August 07, 2026)cert-fr-avis · 2026-08-07
unknownMultiple vulnerabilities in Debian LTS Linux kernel (August 07, 2026)cert-fr-avis · 2026-08-07
unknownDebian Linux Kernel Multiple Vulnerabilitieshkcert · 2026-08-06