Google Android on Pixel C Kernel Sound race condition

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Google Android on Pixel C. Impacted is an unknown function of the component Kernel Sound. Such manipulation leads to race condition. This vulnerability is traded as CVE-2016-2546. An attack has to be approached locally. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Google Android on Pixel C (Smartphone Operating System) (version unknown). Affected by this issue is an unknown function of the component Kernel Sound. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. Impacted is confidentiality, integrity, and availability. CVE summarizes:

sound/core/timer.c in the Linux kernel before 4.4.1 uses an incorrect type of mutex, which allows local users to cause a denial of service (race condition, use-after-free, and system crash) via a crafted ioctl call.

The weakness was shared 08/01/2016 as Android Security Bulletin - August 2016 as confirmed security bulletin (Website). The advisory is shared for download at source.android.com. This vulnerability is handled as CVE-2016-2546 since 02/23/2016. The exploitation is known to be easy. The attack needs to be approached locally. The successful exploitation requires a simple authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 89937 (Ubuntu 14.04 LTS : linux-lts-vivid vulnerabilities (USN-2932-1)), 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 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 immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (89937) and SecurityFocus (BID 83384†). The entries VDB-78542, VDB-80805, VDB-80981 and VDB-81295 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.1
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 89937
Nessus Name: Ubuntu 14.04 LTS : linux-lts-vivid vulnerabilities (USN-2932-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for kernel openSUSE-SU-2016:2144-1 (kernel)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: git.kernel.org

Timelineinfo

02/23/2016 🔍
02/23/2016 +0 days 🔍
03/15/2016 +21 days 🔍
04/27/2016 +42 days 🔍
08/01/2016 +96 days 🔍
08/01/2016 +0 days 🔍
08/06/2016 +5 days 🔍
09/12/2022 +2228 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: Android Security Bulletin - August 2016
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2546 (🔍)
GCVE (CVE): GCVE-0-2016-2546
GCVE (VulDB): GCVE-100-90524

OVAL: 🔍

SecurityFocus: 83384 - Linux Kernel CVE-2016-2546 Use After Free Denial of Service Vulnerability
SecurityTracker: 1035301

scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 08/06/2016 14:02
Updated: 09/12/2022 10:06
Changes: 08/06/2016 14:02 (71), 03/20/2019 15:12 (12), 09/12/2022 10:06 (5)
Complete: 🔍
Cache ID: 216:7BE:103

Once again VulDB remains the best source for vulnerability data.

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