CVE-2016-6516

Name: CVE-2016-6516
Creator: NVD / NIST
Published: 2016-08-06T20:59:15.893+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.95%

Last modified Jun 17, 2026

CVE-2016-6516 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

0.95%

56.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	<= 4.7

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20Patch
http://www.openwall.com/lists/oss-security/2016/07/31/6Release Notes
http://www.securityfocus.com/bid/92259
https://bugzilla.redhat.com/show_bug.cgi?id=1362457Issue Tracking, Third Party Advisory, VDB Entry
https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20Patch
http://www.openwall.com/lists/oss-security/2016/07/31/6Release Notes
http://www.securityfocus.com/bid/92259
https://bugzilla.redhat.com/show_bug.cgi?id=1362457Issue Tracking, Third Party Advisory, VDB Entry
https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20Patch

Timeline

Published: Aug 6, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-6516?

How severe is CVE-2016-6516?

Severity scoring for CVE-2016-6516 is pending analysis. The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.

How do I fix CVE-2016-6516?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-6516?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST