CVE-2016-6516

MEDIUM

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.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20

http://www.openwall.com/lists/oss-security/2016/07/31/6

http://www.securityfocus.com/bid/92259

https://bugzilla.redhat.com/show_bug.cgi?id=1362457

https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20

Details

Source: MITRE

Published: 2016-08-06

Updated: 2016-11-28

Type: CWE-119

Risk Information

CVSS v2.0

Base Score: 4.4

Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3.0

Base Score: 7.4

Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.4

Severity: HIGH