Multiple vulnerabilities in Ubuntu Linux kernel (August 07, 2026)
Multiple vulnerabilities have been discovered in Ubuntu Linux kernel. Some of them allow an attacker to cause privilege escalation, breach of data confidentiality and an unspecified security issue by the publisher.
CSIRTS triage
- What
- Multiple kernel vulnerabilities enable privilege escalation, data confidentiality breaches, and unspecified security issues.
- Who is affected
- Systems running affected Ubuntu Linux kernel versions.
- Urgency
- High; privilege escalation and information disclosure threaten system and data security.
- Action
- Apply Ubuntu Linux kernel security updates as soon as available; test in non-production first.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0985/
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-2026-316230.13% 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-2026-458420.13% 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-2026-314830.12% 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-2026-640460.51% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% 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-2026-314090.45% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% 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-2026-431130.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-315220.12% 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-2026-430680.12% 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
+12 more CVEs referenced in this advisory.
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilities enable denial of servicecert-bund
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
- medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund
- medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund
- high[UPDATE] [high] Linux Kernel: Multiple Vulnerabilitiescert-bund
- high[UPDATE] [high] Linux Kernel: Multiple Vulnerabilitiescert-bund
- medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund
- unknownMultiple vulnerabilities in IBM products (August 07, 2026)cert-fr-avis
- high[UPDATE] [high] Linux Kernel: Multiple Vulnerabilitiescert-bund
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.
- unknownUbuntu Linux Kernel Multiple Vulnerabilitieshkcert · 2026-08-03
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 31, 2026)cert-fr-avis · 2026-07-31
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 24, 2026)cert-fr-avis · 2026-07-24
- unknownMultiple vulnerabilities in the Ubuntu Linux kernel (July 17, 2026)cert-fr-avis · 2026-07-17
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 10, 2026)cert-fr-avis · 2026-07-10
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 3, 2026)cert-fr-avis · 2026-07-03
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