Multiple vulnerabilities in Ubuntu Linux kernel (July 10, 2026)

unknownCVE-2026-46325 CVE-2026-31623 CVE-2026-23198 CVE-2026-43135 CVE-2026-45864 CVE-2026-43078

Multiple vulnerabilities have been discovered in the Ubuntu Linux kernel. Some of them allow an attacker to cause privilege escalation, data confidentiality breaches, and security policy bypass.

CSIRTS triage

vendor: Linux product: kernel Privilege escalation Information disclosureOther

What: Multiple vulnerabilities in the Ubuntu Linux kernel could allow privilege escalation and data confidentiality breaches.
Who is affected: Users of Ubuntu systems running the affected Linux kernel.
Urgency: Remediation is urgent due to the potential for privilege escalation and data breaches.
Action: Apply the latest security updates for the Ubuntu Linux kernel.

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

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Details

Source: CERT-FR Avis de sécurité (FR · national-cert · site)
Severity: unknown
Published: 2026-07-10
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-0861/

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-2026-463250.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-316230.13% 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-2026-231980.12% 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-2026-431350.12% 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-2026-458640.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-430780.13% 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-2026-317130.11% 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-2026-232020.11% 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-2026-459050.11% 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-2026-461190.53% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-46325	coverage & exploitation status	NVD · CVE.org
CVE-2026-31623	coverage & exploitation status	NVD · CVE.org
CVE-2026-23198	coverage & exploitation status	NVD · CVE.org
CVE-2026-43135	coverage & exploitation status	NVD · CVE.org
CVE-2026-45864	coverage & exploitation status	NVD · CVE.org
CVE-2026-43078	coverage & exploitation status	NVD · CVE.org
CVE-2026-31713	coverage & exploitation status	NVD · CVE.org
CVE-2026-23202	coverage & exploitation status	NVD · CVE.org
CVE-2026-45905	coverage & exploitation status	NVD · CVE.org
CVE-2026-46119	coverage & exploitation status	NVD · CVE.org
CVE-2026-43414	coverage & exploitation status	NVD · CVE.org
CVE-2026-46010	coverage & exploitation status	NVD · CVE.org
CVE-2025-38201	coverage & exploitation status	NVD · CVE.org
CVE-2026-31582	coverage & exploitation status	NVD · CVE.org
CVE-2026-46045	coverage & exploitation status	NVD · CVE.org
CVE-2026-31619	coverage & exploitation status	NVD · CVE.org
CVE-2026-31618	coverage & exploitation status	NVD · CVE.org
CVE-2025-71134	coverage & exploitation status	NVD · CVE.org
CVE-2026-43270	coverage & exploitation status	NVD · CVE.org
CVE-2026-46328	coverage & exploitation status	NVD · CVE.org
CVE-2026-46081	coverage & exploitation status	NVD · CVE.org
CVE-2026-43227	coverage & exploitation status	NVD · CVE.org
CVE-2026-45884	coverage & exploitation status	NVD · CVE.org
CVE-2026-46087	coverage & exploitation status	NVD · CVE.org
CVE-2026-43315	coverage & exploitation status	NVD · CVE.org
CVE-2026-43314	coverage & exploitation status	NVD · CVE.org
CVE-2026-46255	coverage & exploitation status	NVD · CVE.org
CVE-2026-31578	coverage & exploitation status	NVD · CVE.org
CVE-2026-46082	coverage & exploitation status	NVD · CVE.org
CVE-2026-43251	coverage & exploitation status	NVD · CVE.org
CVE-2021-47202	coverage & exploitation status	NVD · CVE.org
CVE-2026-43211	coverage & exploitation status	NVD · CVE.org
CVE-2026-31402	coverage & exploitation status	NVD · CVE.org
CVE-2026-46042	coverage & exploitation status	NVD · CVE.org
CVE-2026-45852	coverage & exploitation status	NVD · CVE.org
CVE-2026-43317	coverage & exploitation status	NVD · CVE.org
CVE-2026-45856	coverage & exploitation status	NVD · CVE.org
CVE-2025-71265	coverage & exploitation status	NVD · CVE.org
CVE-2026-46076	coverage & exploitation status	NVD · CVE.org
CVE-2026-23450	coverage & exploitation status	NVD · CVE.org
CVE-2026-31696	coverage & exploitation status	NVD · CVE.org
CVE-2026-43168	coverage & exploitation status	NVD · CVE.org
CVE-2025-37778	coverage & exploitation status	NVD · CVE.org
CVE-2026-31704	coverage & exploitation status	NVD · CVE.org
CVE-2026-31685	coverage & exploitation status	NVD · CVE.org
CVE-2026-43073	coverage & exploitation status	NVD · CVE.org
CVE-2026-43143	coverage & exploitation status	NVD · CVE.org
CVE-2026-46013	coverage & exploitation status	NVD · CVE.org

+12 more CVEs referenced in this advisory.

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Recent advisories for Ubuntu 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.

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