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 (heap-based buffer overflow) or possibly gain privileges by changing a certain count value, aka a "double fetch" vulnerability.

CVSS v3.0 7.4 HIGH
CVSS v2.0 4.4 MEDIUM

7.4^/10

CVSS v3.0 : HIGH

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

Exploitability : 1.4 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.4^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.4 / Impact : 6.4

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20	Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20	Patch
http://www.openwall.com/lists/oss-security/2016/07/31/6	Release Notes
https://bugzilla.redhat.com/show_bug.cgi?id=1362457	Issue Tracking Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/92259

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Information

Published : 2016-08-06 13:59

Updated : 2016-11-28 12:33

NVD link : CVE-2016-6516

Mitre link : CVE-2016-6516

JSON object : View

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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Products Affected

linux

linux_kernel

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