Multiple vulnerabilities in Red Hat Linux kernel (August 28, 2026)
Multiple vulnerabilities were discovered in Red Hat Linux kernel. Some of them allow an attacker to cause arbitrary code execution, privilege escalation, and remote denial of service.
CSIRTS triage
- What
- Multiple vulnerabilities in the Red Hat Linux kernel allow arbitrary code execution, privilege escalation, and remote denial of service.
- Who is affected
- All Red Hat Linux systems are affected.
- Urgency
- Critical; kernel vulnerabilities enabling arbitrary code execution and privilege escalation require immediate remediation.
- Action
- Apply Red Hat kernel security patches immediately.
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-1092/
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-2026-745810.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-638860.71% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 51% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-531850.14% 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-2025-400260.16% 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-2026-529240.34% 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-2026-638880.78% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 53% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-641890.10% 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-2026-642760.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-639130.97% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 59% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-460990.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.
Referenced CVEs
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- medium[UPDATE] [medium] Linux Kernel: Multiple Vulnerabilitiescert-bund
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- medium[NEW] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attackcert-bund
- medium[NEW] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
- unknownUSN-8661-4: Linux kernel vulnerabilitiesubuntu
- unknownUSN-8715-1: Linux kernel (Oracle) vulnerabilitiesubuntu
- unknownRedHat Linux Kernel Multiple Vulnerabilitieshkcert
- low[UPDATE] [low] Linux Kernel: Vulnerability allows denial of servicecert-bund
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- unknownexploitedMultiple vulnerabilities in IBM products (August 28, 2026)cert-fr-avis
Recent advisories for Red Hat Linux
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.
- medium[NEW] [medium] Red Hat Enterprise Linux (libsolv, aardvark-dns): Multiple vulnerabilitiescert-bund · 2026-09-03
- high[NEW] [high] Red Hat Enterprise Linux (sssd, glib, c-ares): Multiple vulnerabilitiescert-bund · 2026-09-03
- medium[UPDATE] [medium] Red Hat Enterprise Linux (go-jose): Vulnerability allows denial of servicecert-bund · 2026-09-03
- high[NEW] [high] Red Hat Enterprise Linux (nodejs:24): Multiple vulnerabilitiescert-bund · 2026-09-03
- medium[NEW] [medium] Red Hat Enterprise Linux (brace-expansion): Vulnerability allows denial of servicecert-bund · 2026-09-03
- high[UPDATE] [high] Red Hat Enterprise Linux (DBI, perl-GD): Multiple vulnerabilitiescert-bund · 2026-09-03
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