Linux Kernel up to bnep_sock_ioctl input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability classified as critical has been found in Linux Kernel up to (Operating System). This affects the function bnep_sock_ioctl. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, and availability. The summary by CVE is:

The bnep_sock_ioctl function in net/bluetooth/bnep/sock.c in the Linux kernel before 2.6.39 does not ensure that a certain device field ends with a \0 character, which allows local users to obtain potentially sensitive information from kernel stack memory, or cause a denial of service (BUG and system crash), via a BNEPCONNADD command.

The issue has been introduced in 03/14/2011. The weakness was published 06/21/2012 (Website). The advisory is shared at This vulnerability is uniquely identified as CVE-2011-1079. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 57 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 53850 (Fedora 14 : kernel- (2011-6541)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 158003 (Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2019-4685)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (65846) and Tenable (53850). Similar entries are available at 61066 and 61064.






  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.8
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Input validation
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 53850
Nessus Name: Fedora 14 : kernel- (2011-6541)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 69970
OpenVAS Name: Debian Security Advisory DSA 2264-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 43629f8f5ea32a998d06d1bb41eefa0e821ff573


02/14/2011 🔍
02/24/2011 +9 days 🔍
03/01/2011 +5 days 🔍
03/14/2011 +13 days 🔍
05/10/2011 +57 days 🔍
08/03/2011 +85 days 🔍
06/21/2012 +323 days 🔍
06/21/2012 +0 days 🔍
03/23/2015 +1005 days 🔍
12/05/2021 +2449 days 🔍



Advisory: 153799
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-1079 (🔍)

X-Force: 65846
Vulnerability Center: 32541 - Linux Kernel 2.6.38-rc2 and earlier Local Information Disclosure or Denial of Service Vulnerability, Medium
SecurityFocus: 46616 - Linux Kernel Multiple Local Information Disclosure Vulnerabilities

See also: 🔍


Created: 03/23/2015 04:50 PM
Updated: 12/05/2021 08:59 AM
Changes: 03/23/2015 04:50 PM (67), 03/29/2017 10:58 AM (9), 12/05/2021 08:55 AM (7), 12/05/2021 08:57 AM (1), 12/05/2021 08:59 AM (1)
Complete: 🔍


No comments yet. Languages: en.

Please log in to comment.

Do you need the next level of professionalism?

Upgrade your account now!