Linux Kernel up to 4.6.0 Kernel Profiling Subsystem ring_buffer.c ring_buffer_resize integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 4.6.0. This issue affects the function ring_buffer_resize of the file kernel/trace/ring_buffer.c of the component Kernel Profiling Subsystem. Executing a manipulation can lead to integer overflow. The identification of this vulnerability is CVE-2016-9754. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 4.6.0 (Operating System) and classified as critical. This vulnerability affects the function ring_buffer_resize of the file kernel/trace/ring_buffer.c of the component Kernel Profiling Subsystem. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 01/03/2017. The weakness was shared 01/05/2017 as confirmed changelog (Website). The advisory is shared for download at kernel.org. The vendor cooperated in the coordination of the public release. This vulnerability was named CVE-2016-9754 since 12/01/2016. The attack needs to be approached locally. The requirement for exploitation is a single authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 111850 (Photon OS 1.0: Libxml2 / Linux / Openssh PHSA-2017-0001 (deprecated)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family PhotonOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196910 (Ubuntu Security Notification for Linux Vulnerabilities (USN-3422-1)).

Upgrading to version 4.6.1 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 (111850) and SecurityFocus (BID 95278†). The entries VDB-94997 and VDB-106424 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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: 111850
Nessus Name: Photon OS 1.0: Libxml2 / Linux / Openssh PHSA-2017-0001 (deprecated)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for linux USN-3422-1
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: 🔍

Upgrade: Kernel 4.6.1
Patch: git.kernel.org

Timelineinfo

12/01/2016 🔍
01/03/2017 +33 days 🔍
01/03/2017 +0 days 🔍
01/04/2017 +1 days 🔍
01/05/2017 +1 days 🔍
01/05/2017 +0 days 🔍
01/05/2017 +0 days 🔍
08/17/2018 +589 days 🔍
10/27/2022 +1532 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 59643d1535eb220668692a5359de22545af579f6
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-9754 (🔍)
GCVE (CVE): GCVE-0-2016-9754
GCVE (VulDB): GCVE-100-95044
SecurityFocus: 95278 - Linux Kernel CVE-2016-9754 Local Integer Overflow Vulnerability
OSVDB: - CVE-2016-9754 - Linux - Buffer Overflow Issue

See also: 🔍

Entryinfo

Created: 01/04/2017 18:43
Updated: 10/27/2022 16:31
Changes: 01/04/2017 18:43 (87), 10/27/2022 16:31 (6)
Complete: 🔍
Cache ID: 216:578:103

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