Linux Kernel up to 4.4.0 IOCTL Call sound/core/hrtimer.c input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 4.4.0. This impacts an unknown function of the file sound/core/hrtimer.c of the component IOCTL Call Handler. Executing a manipulation can lead to input validation. This vulnerability is registered as CVE-2016-2549. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.4.0 (Operating System). It has been declared as critical. This vulnerability affects an unknown part of the file sound/core/hrtimer.c of the component IOCTL Call Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

sound/core/hrtimer.c in the Linux kernel before 4.4.1 does not prevent recursive callback access, which allows local users to cause a denial of service (deadlock) via a crafted ioctl call.

The weakness was published 04/27/2016 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2016-2549 since 02/22/2016. The attack needs to be approached locally. A single authentication is necessary for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 89122 (Debian DSA-3503-1 : linux - 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 157744 (Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2018-4145)).

Upgrading to version 4.4.1 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 databases at Tenable (89122) and SecurityFocus (BID 83382†). Similar entries are available at VDB-80982, VDB-81408, VDB-82946 and VDB-82955. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.8

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.2
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 89122
Nessus Name: Debian DSA-3503-1 : linux - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703503
OpenVAS Name: Debian Security Advisory DSA 3503-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.4.1
Patch: git.kernel.org

Timelineinfo

02/22/2016 🔍
02/22/2016 +0 days 🔍
03/02/2016 +9 days 🔍
03/03/2016 +1 days 🔍
04/27/2016 +54 days 🔍
04/27/2016 +0 days 🔍
04/28/2016 +1 days 🔍
07/27/2022 +2281 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2929-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2549 (🔍)
GCVE (CVE): GCVE-0-2016-2549
GCVE (VulDB): GCVE-100-82960

OVAL: 🔍

SecurityFocus: 83382 - Linux Kernel CVE-2016-2549 Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 04/28/2016 10:24
Updated: 07/27/2022 08:16
Changes: 04/28/2016 10:24 (68), 10/29/2018 05:57 (13), 07/27/2022 08:16 (5)
Complete: 🔍
Cache ID: 216::103

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