CVE-2016-9644

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel 4.4.22 through 4.4.28 contains extended asm statements that are incompatible with the exception table, which allows local users to obtain root access on non-SMEP platforms via a crafted application. NOTE: this vulnerability exists because of incorrect backporting of the CVE-2016-9178 patch to older kernels.

References

http://www.openwall.com/lists/oss-security/2016/11/07/4

http://www.securityfocus.com/bid/94545

http://www.ubuntu.com/usn/USN-3146-1

http://www.ubuntu.com/usn/USN-3146-2

https://lwn.net/Articles/705220/

Details

Source: MITRE

Published: 2016-11-28

Updated: 2017-01-07

Type: CWE-264

Risk Information

CVSS v2

Base Score: 9.3

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

Impact Score: 10

Exploitability Score: 8.6

Severity: HIGH

CVSS v3

Base Score: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH

Tenable Plugins

View all (11 total)

IDNameProductFamilySeverity
102774OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0145) (Stack Clash)NessusOracleVM Local Security Checks
critical
102773Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3609) (Stack Clash)NessusOracle Linux Local Security Checks
critical
100237OracleVM 3.3 : Unbreakable / etc (OVMSA-2017-0105)NessusOracleVM Local Security Checks
critical
100234Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3566)NessusOracle Linux Local Security Checks
critical
99163OracleVM 3.3 : Unbreakable / etc (OVMSA-2017-0057) (Dirty COW)NessusOracleVM Local Security Checks
critical
99162OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0056)NessusOracleVM Local Security Checks
critical
99160Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3534)NessusOracle Linux Local Security Checks
high
99159Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3533)NessusOracle Linux Local Security Checks
critical
95998Ubuntu 16.04 LTS : linux-snapdragon vulnerabilities (USN-3161-4)NessusUbuntu Local Security Checks
critical
95433Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3146-2)NessusUbuntu Local Security Checks
high
95432Ubuntu 16.04 LTS : linux vulnerabilities (USN-3146-1)NessusUbuntu Local Security Checks
high