VDB-83146 · CVE-2016-3138 · Qualys 196463

Linux Kernel up to 4.5.0 USB Descriptor cdc-acm.c acm_probe null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability has been found in Linux Kernel up to 4.5.0 (Operating System) and classified as critical. This vulnerability affects the function acm_probe of the file drivers/usb/class/cdc-acm.c of the component USB Descriptor Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The acm_probe function in drivers/usb/class/cdc-acm.c in the Linux kernel before 4.5.1 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a USB device without both a control and a data endpoint descriptor.

The weakness was released 05/02/2016 (Website). The advisory is available at github.com. This vulnerability was named CVE-2016-3138 since 03/13/2016. Local access is required to approach this attack. The successful exploitation requires a single authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 90330 (Fedora 24 : kernel-4.5.0-302.fc24 (2016-81fd1b03aa)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196463 (Ubuntu Security Notification for Linux Vulnerabilities (USN-2965-1)).

Upgrading to version 4.5.1 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (90330).







CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 8.4
VulDB Temp Score: 8.0
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NVD Base Score: 4.6
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Class: Null pointer dereference
CWE: CWE-476 / CWE-404

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Nessus ID: 90330
Nessus Name: Fedora 24 : kernel-4.5.0-302.fc24 (2016-81fd1b03aa)
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OpenVAS ID: 830125
OpenVAS Name: Ubuntu Update for linux-raspi2 USN-2965-3
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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.5.1
Patch: git.kernel.org


03/13/2016 🔍
04/02/2016 +20 days 🔍
04/05/2016 +3 days 🔍
05/02/2016 +27 days 🔍
05/02/2016 +0 days 🔍
05/03/2016 +1 days 🔍
07/27/2022 +2276 days 🔍


Vendor: kernel.org

Advisory: FEDORA-2016-81fd1b03aa
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-3138 (🔍)


Created: 05/03/2016 11:26 AM
Updated: 07/27/2022 07:47 PM
Changes: 05/03/2016 11:26 AM (66), 11/07/2018 04:36 PM (12), 07/27/2022 07:39 PM (4), 07/27/2022 07:47 PM (1)
Complete: 🔍
Cache ID: 44:D6C:40


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