Linux Kernel up to 3.14.72/4.4.13/4.6.2 setsockopt access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical was found in Linux Kernel up to 3.14.72/4.4.13/4.6.2 (Operating System). This vulnerability affects the function setsockopt. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 06/24/2016 (Website). The advisory is available at This vulnerability was named CVE-2016-4997 since 05/24/2016. The exploitation appears to be easy. Local access is required to approach this attack. The successful exploitation needs a single authentication. Technical details and also a public exploit are known. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

It is declared as highly functional. It is possible to download the exploit at As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 91880 (Ubuntu 14.04 LTS : linux vulnerabilities (USN-3018-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196518 (Ubuntu Security Notification for Linux-lts-vivid Vulnerabilities (USN-3020-1)).

Upgrading to version 3.14.73, 4.4.14 or 4.6.3 eliminates this vulnerability. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityTracker (ID 1036171), Tenable (91880) and Exploit-DB (40435). See 87611, 88137, 88552 and 90548 for similar entries.






  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
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NVD Base Score: 7.8
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Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

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Nessus ID: 91880
Nessus Name: Ubuntu 14.04 LTS : linux vulnerabilities (USN-3018-1)
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OpenVAS ID: 863936
OpenVAS Name: Ubuntu Update for linux USN-3018-1
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MetaSploit ID: netfilter_priv_esc.rb
MetaSploit Name: Linux Kernel 4.6.3 Netfilter Privilege Escalation
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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

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Upgrade: Kernel 3.14.73/4.4.14/4.6.3


05/24/2016 🔍
06/24/2016 +31 days 🔍
06/24/2016 +0 days 🔍
06/27/2016 +3 days 🔍
06/27/2016 +0 days 🔍
06/27/2016 +0 days 🔍
06/28/2016 +1 days 🔍
07/03/2016 +5 days 🔍
08/24/2022 +2243 days 🔍



Advisory: USN-3016-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4997 (🔍)

SecurityTracker: 1036171
SecurityFocus: 91451 - Linux Kernel Multiple Local Memory Corruption Vulnerabilities

scip Labs:
See also: 🔍


Created: 06/27/2016 02:43 PM
Updated: 08/24/2022 04:30 PM
Changes: 06/27/2016 02:43 PM (75), 02/11/2019 09:54 AM (18), 08/24/2022 04:22 PM (6), 08/24/2022 04:30 PM (1)
Complete: 🔍


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