VDB-172138 · CVE-2021-30002 · GCVE-0-2021-30002

Linux Kernel up to 5.11.2 Webcam v4l2-ioctl.c video_usercopy memory leak

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.
3.4	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel up to 5.11.2. Affected is the function video_usercopy of the file drivers/media/v4l2-core/v4l2-ioctl.c of the component Webcam Handler. Executing a manipulation can lead to memory leak. This vulnerability appears as CVE-2021-30002. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.11.2 (Operating System) and classified as problematic. This vulnerability affects the function video_usercopy of the file drivers/media/v4l2-core/v4l2-ioctl.c of the component Webcam Handler. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability.

The weakness was presented 04/02/2021. The advisory is available at bugzilla.suse.com. This vulnerability was named CVE-2021-30002. Technical details are known, but there is no available exploit.

Upgrading to version 5.11.3 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

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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: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.11.3
Patch: git.kernel.org

Timelineinfo

04/02/2021 🔍
04/02/2021 +0 days 🔍
04/02/2021 +0 days 🔍
04/07/2021 +5 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.suse.com
Status: Confirmed

CVE: CVE-2021-30002 (🔍)
GCVE (CVE): GCVE-0-2021-30002
GCVE (VulDB): GCVE-100-172138

Entryinfo

Created: 04/02/2021 16:17
Updated: 04/07/2021 23:23
Changes: 04/02/2021 16:17 (44), 04/07/2021 23:23 (5)
Complete: 🔍
Cache ID: 216::103