VDB-130385 · CVE-2016-10741 · BID 107127

Linux Kernel up to 4.9.2 IO Handler fs/xfs/xfs_aops.c race condition

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.
5.0	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 4.9.2 and classified as problematic. This affects an unknown part of the file fs/xfs/xfs_aops.c of the component IO Handler. The manipulation leads to race condition. This vulnerability is referenced as CVE-2016-10741. The attack can only be performed from a local environment. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 4.9.2 (Operating System). This issue affects an unknown part of the file fs/xfs/xfs_aops.c of the component IO Handler. 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 availability. The summary by CVE is:

In the Linux kernel before 4.9.3, fs/xfs/xfs_aops.c allows local users to cause a denial of service (system crash) because there is a race condition between direct and memory-mapped I/O (associated with a hole) that is handled with BUG_ON instead of an I/O failure.

The bug was discovered 11/08/2016. The weakness was published 02/01/2019 (Website). The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2016-10741 since 02/01/2019. An attack has to be approached locally. A simple authentication is necessary 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 815 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172154 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2019:13979-1)).

Upgrading to version 4.9.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 107127†). Similar entries are available at VDB-115041, VDB-119428, VDB-120148 and VDB-130352. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

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: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.9.3
Patch: git.kernel.org

Timelineinfo

11/08/2016 🔍
02/01/2019 +815 days 🔍
02/01/2019 +0 days 🔍
02/01/2019 +0 days 🔍
02/02/2019 +1 days 🔍
02/15/2019 +13 days 🔍
07/04/2023 +1600 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 04197b341f23b908193308b8d63d17ff23232598
Status: Confirmed

CVE: CVE-2016-10741 (🔍)
GCVE (CVE): GCVE-0-2016-10741
GCVE (VulDB): GCVE-100-130385
SecurityFocus: 107127 - Linux Kernel CVE-2019-6974 Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 02/02/2019 20:29
Updated: 07/04/2023 10:52
Changes: 02/02/2019 20:29 (66), 05/07/2020 10:40 (3), 07/04/2023 10:47 (5), 07/04/2023 10:52 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.