Linux Kernel up to 5.15.2 USB Device usb.c mwifiex_usb_recv denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.15.2 and classified as problematic. Affected by this issue is the function mwifiex_usb_recv of the file drivers/net/wireless/marvell/mwifiex/usb.c of the component USB Device Handler. The manipulation results in denial of service. This vulnerability is reported as CVE-2021-43976. An attack on the physical device is feasible. No exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.2 (Operating System). It has been classified as problematic. Affected is the function mwifiex_usb_recv of the file drivers/net/wireless/marvell/mwifiex/usb.c of the component USB Device Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The weakness was disclosed 11/17/2021. The advisory is shared for download at patchwork.kernel.org. This vulnerability is traded as CVE-2021-43976 since 11/17/2021. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236670 (Alibaba Cloud Linux 3 : 0125: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0125)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at patchwork.kernel.org.

The vulnerability is also documented in the vulnerability database at Tenable (236670). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236670
Nessus Name: Alibaba Cloud Linux 3 : 0125: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2022:0125)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: patchwork.kernel.org

Timelineinfo

11/17/2021 🔍
11/17/2021 +0 days 🔍
11/17/2021 +0 days 🔍
05/18/2025 +1278 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: patchwork.kernel.org
Status: Confirmed

CVE: CVE-2021-43976 (🔍)
GCVE (CVE): GCVE-0-2021-43976
GCVE (VulDB): GCVE-100-186792

Entryinfo

Created: 11/17/2021 21:34
Updated: 05/18/2025 18:27
Changes: 11/17/2021 21:34 (43), 11/20/2021 00:56 (1), 05/18/2025 18:27 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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