CVE-2016-6516: Linux Kernel

High severity, CVSS 7.4. EPSS: 0.9% chance of exploitation in the next 30 days.

Race condition in the ioctl_file_dedupe_range function in fs/ioctl.c in the Linux kernel through 4.7 allows local users to cause a denial of service (heap-based buffer overflow) or possibly gain privileges by changing a certain count value, aka a "double fetch" vulnerability.

Affected products

• Linux Linux Kernel: up to and including 4.7

Published 2016-08-06. Last modified 2026-06-17.