Linux Kernel up to 4.4.0 IOCTL Call sound/core/timer.c input validation
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.8 | $0-$5k | 0.00 |
A vulnerability was found in Linux Kernel up to 4.4.0 (Operating System). It has been classified as critical. This affects some unknown functionality of the file sound/core/timer.c of the component IOCTL Call Handler. 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, integrity, and availability. The summary by CVE is:
sound/core/timer.c in the Linux kernel before 4.4.1 retains certain linked lists after a close or stop action, which allows local users to cause a denial of service (system crash) via a crafted ioctl call, related to the (1) snd_timer_close and (2) _snd_timer_stop functions.
The weakness was shared 04/27/2016 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2016-2548 since 02/22/2016. Attacking locally is a requirement. A authentication is required for exploitation. Technical details of the vulnerability are known, but there is no available exploit.
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 vulnerability database at Tenable (89122). The entries 80982, 81408, 82946 and 82955 are related to this item.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
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CVSSv3
VulDB Meta Base Score: 8.0VulDB 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: 🔍
CVSSv2
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VulDB Base Score: 🔍
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Exploiting
Class: Input validationCWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
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EPSS Percentile: 🔍
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Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Kernel 4.4.1
Patch: git.kernel.org
Timeline
02/22/2016 🔍02/23/2016 🔍
03/02/2016 🔍
03/03/2016 🔍
04/27/2016 🔍
04/27/2016 🔍
04/28/2016 🔍
07/27/2022 🔍
Sources
Vendor: kernel.orgAdvisory: USN-2929-1
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2016-2548 (🔍)
OVAL: 🔍
SecurityTracker: 1035306
SecurityFocus: 83383 - Linux Kernel CVE-2016-2548 Multiple Local Denial of Service Vulnerabilities
See also: 🔍
Entry
Created: 04/28/2016 10:24Updated: 07/27/2022 08:14
Changes: 04/28/2016 10:24 (62), 10/29/2018 05:56 (19), 07/27/2022 08:14 (6)
Complete: 🔍
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