CVE-2016-6516

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.

Category

7.4
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.52%
Third-Party Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20 patch
http://www.securityfocus.com/bid/92259 vdb entry
http://www.openwall.com/lists/oss-security/2016/07/31/6 release notes mailing list
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20 patch
https://bugzilla.redhat.com/show_bug.cgi?id=1362457 third party advisory vdb entry issue tracking

Frequently Asked Questions

What is the severity of CVE-2016-6516?
CVE-2016-6516 has been scored as a high severity vulnerability.
How to fix CVE-2016-6516?
To fix CVE-2016-6516, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-6516 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-6516 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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