CVE-2026-63886
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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Exploitation outlook
- Low exploitation risk0.71% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 51% of all EPSS-scored CVEs.
Advisory coverage (7)
- unknownMultiple vulnerabilities in Red Hat Linux kernel (August 28, 2026)cert-fr-avis · 2026-08-28
- unknownUSN-8664-1: Linux kernel (NVIDIA BaseOS) vulnerabilitiesubuntu · 2026-08-20
- unknownUSN-8663-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu · 2026-08-20
- highUSN-8618-1: Linux kernel vulnerabilitiesubuntu · 2026-07-28
- highUSN-8603-1: Linux kernel (Azure) vulnerabilitiesubuntu · 2026-07-24
- highUSN-8593-1: Linux kernel vulnerabilitiesubuntu · 2026-07-23
- criticalCVE-2026-63886: In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Valid…nvd · 2026-07-19
External references
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