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Vulnerability Details : CVE-2016-9644

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.
Publish Date : 2016-11-27 Last Update Date : 2017-01-06
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- CVSS Scores & Vulnerability Types

CVSS Score
9.3
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 264

- Products Affected By CVE-2016-9644

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 4.4.22 Version Details Vulnerabilities
2 OS Linux Linux Kernel 4.4.23 Version Details Vulnerabilities
3 OS Linux Linux Kernel 4.4.24 Version Details Vulnerabilities
4 OS Linux Linux Kernel 4.4.25 Version Details Vulnerabilities
5 OS Linux Linux Kernel 4.4.26 Version Details Vulnerabilities
6 OS Linux Linux Kernel 4.4.27 Version Details Vulnerabilities
7 OS Linux Linux Kernel 4.4.28 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 7

- References For CVE-2016-9644

https://lwn.net/Articles/705220/ CONFIRM
http://www.ubuntu.com/usn/USN-3146-2
UBUNTU USN-3146-2
http://www.openwall.com/lists/oss-security/2016/11/07/4
MLIST [oss-security] 20161107 Re: Re: kernel: fix minor infoleak in get_user_ex()
http://www.securityfocus.com/bid/94545
BID 94545 Linux Kernel CVE-2016-9644 Local Privilege Escalation Vulnerability Release Date:2016-12-06
http://www.ubuntu.com/usn/USN-3146-1
UBUNTU USN-3146-1

- Metasploit Modules Related To CVE-2016-9644

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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