CVE-2026-45991
Multiple vulnerabilities have been 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 Red Hat Linux kernel enable arbitrary code execution, privilege escalation, and remote denial of service.
- Who is affected
- Red Hat Enterprise Linux systems running affected kernel versions are vulnerable.
- Urgency
- Critical; RCE and privilege escalation vulnerabilities pose immediate compromise risk.
- Action
- Apply Red Hat kernel security errata addressing all listed CVEs.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Advisory coverage (16)
- unknownMultiple vulnerabilities in Red Hat Linux kernel (August 14, 2026)cert-fr-avis · 2026-08-14
- highUSN-8619-1: Linux kernel (HWE) vulnerabilitiesubuntu · 2026-07-28
- highUSN-8595-3: Linux kernel (AWS) vulnerabilitiesubuntu · 2026-07-28
- highUSN-8574-3: Linux kernel vulnerabilitiesubuntu · 2026-07-28
- highUSN-8609-1: Linux kernel (Azure CVM) vulnerabilitiesubuntu · 2026-07-24
- highUSN-8608-1: Linux kernel (Azure FIPS) vulnerabilitiesubuntu · 2026-07-24
- highUSN-8607-1: Linux kernel (Azure CVM) vulnerabilitiesubuntu · 2026-07-24
- highUSN-8606-1: Linux kernel (Azure) vulnerabilitiesubuntu · 2026-07-24
- highUSN-8595-2: Linux kernel (AWS) vulnerabilitiesubuntu · 2026-07-24
- highUSN-8603-1: Linux kernel (Azure) vulnerabilitiesubuntu · 2026-07-24
- highUSN-8596-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu · 2026-07-23
- highUSN-8595-1: Linux kernel (Oracle) vulnerabilitiesubuntu · 2026-07-23
- highUSN-8574-2: Linux kernel vulnerabilitiesubuntu · 2026-07-23
- highUSN-8574-1: Linux kernel (GCP FIPS) vulnerabilitiesubuntu · 2026-07-21
- highUSN-8569-1: Linux kernel (HWE) vulnerabilitiesubuntu · 2026-07-20
- highUSN-8567-1: Linux kernel vulnerabilitiesubuntu · 2026-07-20
External references
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