Vulnerability Name:

CVE-2016-6156 (CCN-114718)

Assigned:2016-07-04
Published:2016-07-04
Updated:2016-11-28
Summary:Race condition in the ec_device_ioctl_xcmd function in drivers/platform/chrome/cros_ec_dev.c in the Linux kernel before 4.7 allows local users to cause a denial of service (out-of-bounds array access) by changing a certain size value, aka a "double fetch" vulnerability.
CVSS v3 Severity:5.1 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
4.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:1.9 Low (CVSS v2 Vector: AV:L/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-362
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2016-6156

Source: CONFIRM
Type: Issue Tracking, Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096cdc6f52225835ff503f987a0d68ef770bb78e

Source: BUGTRAQ
Type: Third Party Advisory, VDB Entry
20160704 [CVE-2016-6156] Double-Fetch Vulnerability in Linux-4.6/drivers/platform/chrome/cros_ec_dev.c

Source: CCN
Type: BugTraq Mailing List, Mon, 4 Jul 2016 12:48:13 GMT
[CVE-2016-6156] Double-Fetch Vulnerability in Linux-4.6/drivers/platform/chrome/cros_ec_dev.c

Source: BID
Type: UNKNOWN
91553

Source: CCN
Type: BID-91553
Linux Kernel CVE-2016-6156 Local Information Disclosure Vulnerability

Source: CCN
Type: Kernel Bug Tracker – Bug 120131
Double-Fetch bug in Linux-4.6/drivers/platform/chrome/cros_ec_dev.c

Source: MISC
Type: Issue Tracking
https://bugzilla.kernel.org/show_bug.cgi?id=120131

Source: CONFIRM
Type: Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1353490

Source: XF
Type: UNKNOWN
linux-kernel-cve20166156-bo(114718)

Source: CONFIRM
Type: Issue Tracking, Patch
https://github.com/torvalds/linux/commit/096cdc6f52225835ff503f987a0d68ef770bb78e

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2016-6156

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 4.6.6)

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.6:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.precise:def:20166156000
    V
    		CVE-2016-6156 on Ubuntu 12.04 LTS (precise) - medium.
    2016-08-06
    oval:com.ubuntu.trusty:def:20166156000
    V
    		CVE-2016-6156 on Ubuntu 14.04 LTS (trusty) - medium.
    2016-08-06
    oval:com.ubuntu.xenial:def:20166156000
    V
    		CVE-2016-6156 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-08-06
    oval:com.ubuntu.xenial:def:201661560000000
    V
    		CVE-2016-6156 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-08-06
    BACK
    linux linux kernel *
    linux linux kernel 4.6