XFS Kernel Race Lets Local Users Escalate to Root (CVE‑2026‑64600)
A race condition in XFS’s copy‑on‑write path lets an unprivileged local account refresh stale data‑fork mappings, causing incorrect refcount checks. Exploiting this lets the attacker overwrite protected files and seize root privileges. All Linux kernels shipping XFS are vulnerable until the fix is applied.