CVE-2016-6516

low-risk
Published 2016-08-06

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.

Do I need to act?

-
0.52% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.4/10 High
LOCAL / HIGH complexity

Affected Products (1)

Affected Vendors

Linux

References (10)

Patch http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec6...
Release Notes http://www.openwall.com/lists/oss-security/2016/07/31/6
http://www.securityfocus.com/bid/92259
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1362457
Patch https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a2...
Patch http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec6...
Release Notes http://www.openwall.com/lists/oss-security/2016/07/31/6
http://www.securityfocus.com/bid/92259
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1362457
Patch https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a2...
26
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal