Linux Kernel CXGB3 Kernel Driver use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Linux Kernel (Operating System) (unknown version). It has been rated as critical. This issue affects an unknown code block of the component CXGB3 Kernel Driver. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability.

The weakness was released 02/11/2016 with Red Hat as Bug 1303532 as confirmed bug report (Bugzilla). The advisory is shared at The identification of this vulnerability is CVE-2015-8812 since 02/11/2016. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 89040 (Debian DLA-439-1 : linux-2.6 security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196465 (Ubuntu Security Notification for Linux Vulnerabilities (USN-2967-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110574) and Tenable (89040). is providing further details. Entries connected to this vulnerability are available at 78542, 80805, 81295 and 82949.






CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.1

VulDB Base Score: 9.8
VulDB Temp Score: 8.5
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NVD Base Score: 9.8
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Class: Use after free
CWE: CWE-416 / CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

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Nessus ID: 89040
Nessus Name: Debian DLA-439-1 : linux-2.6 security update
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OpenVAS ID: 80009
OpenVAS Name: Ubuntu Update for linux-lts-vivid USN-2949-1
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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

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02/11/2016 🔍
02/11/2016 +0 days 🔍
02/11/2016 +0 days 🔍
02/16/2016 +5 days 🔍
02/29/2016 +13 days 🔍
03/01/2016 +1 days 🔍
04/06/2016 +36 days 🔍
04/07/2016 +1 days 🔍
04/27/2016 +20 days 🔍
07/08/2022 +2263 days 🔍



Advisory: Bug 1303532
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8812 (🔍)

X-Force: 110574 - Linux Kernel CXGB3 kernel driver privilege escalation
Vulnerability Center: 57973 - Linux Kernel before 4.3.6 Remote Privilege Escalation Vulnerability - CVE-2015-8812, Critical
SecurityFocus: 83218 - Linux Kernel CVE-2015-8812 Local Privilege Escalation Vulnerability

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Created: 02/16/2016 10:02 AM
Updated: 07/08/2022 08:13 AM
Changes: 02/16/2016 10:02 AM (64), 02/03/2019 10:55 AM (20), 07/08/2022 08:11 AM (3), 07/08/2022 08:13 AM (10)
Complete: 🔍


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