CVE-2016-9644
Linux Kernel SMEP Bypass
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.
INFO
Published Date :
Nov. 28, 2016, 3:59 a.m.
Last Modified :
Nov. 21, 2024, 3:01 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2016-9644 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-9644.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2016/11/07/4 | Mailing List Third Party Advisory |
| 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/ | Product |
| http://www.openwall.com/lists/oss-security/2016/11/07/4 | Mailing List Third Party Advisory |
| 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/ | Product |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-9644 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-9644 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Jan. 07, 2017
Action Type Old Value New Value Added Reference http://www.ubuntu.com/usn/USN-3146-2 [No Types Assigned] Added Reference http://www.ubuntu.com/usn/USN-3146-1 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 30, 2016
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/94545 [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:o:linux:linux_kernel:4.4.23:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:4.4.24:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:4.4.25:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:4.4.26:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:4.4.27:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:4.4.28:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:4.4.22:*:*:*:*:*:*:* Added CVSS V2 (AV:N/AC:M/Au:N/C:C/I:C/A:C) Added CVSS V3 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Changed Reference Type https://lwn.net/Articles/705220/ No Types Assigned https://lwn.net/Articles/705220/ Product Changed Reference Type http://www.openwall.com/lists/oss-security/2016/11/07/4 No Types Assigned http://www.openwall.com/lists/oss-security/2016/11/07/4 Third Party Advisory, Mailing List Added CWE CWE-264
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-9644 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-9644
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.09 }} 0.00%
score
0.38274
percentile