type: cve · created: 2026-07-24 · updated: 2026-07-24 · tags: [cve, linux, kernel, privilege-escalation] · confidence: medium · severity: high · affected_sectors: [technology] · au_impact: true
CVE-2026-64600
CVE-2026-64600 is a flaw in the Linux kernel — dubbed RefluXFS — a roughly nine-year-old bug giving local privilege escalation on affected systems.
| Attribute | Detail |
|---|---|
| CVE | CVE-2026-64600 |
| Vendor | Linux kernel |
| Name | RefluXFS |
| Type | Local privilege escalation |
| Age | ~9-year-old kernel bug |
| Source | The Hacker News (Guardio Labs research) — Tier 2/4 |
The RefluXFS finding underscores how aged kernel defects persist as local-privilege-escalation vectors, especially on long-lived enterprise and server fleets.