CVE-2016-6516
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...
- Published
- Aug 6, 2016
- Updated
- Aug 6, 2024
- Assigning CNA
- mitre
- Evidence observed
- Aug 5, 2026
Primary CVSS
nvd · CVSS 3.0
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 53.7%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
1An demonstration of how to exploit double-fetch vulnerability CVE-2016-6516
Responsible use
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