Linux Kernel up to 5.16-rc1 NFC Controller Interface net/nfc/nci/core.c nci_request use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.16-rc1 and classified as critical. This issue affects the function nci_request of the file net/nfc/nci/core.c of the component NFC Controller Interface. This manipulation causes use after free. This vulnerability appears as CVE-2021-4202. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.16-rc1 (Operating System). It has been declared as critical. Affected by this vulnerability is the function nci_request of the file net/nfc/nci/core.c of the component NFC Controller Interface. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 03/26/2022. The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2021-4202 since 01/10/2022. Technical details are known, but no exploit is available.

Upgrading to version 5.16-rc2 eliminates this vulnerability. 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.

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

Productinfo

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Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.16-rc2
Patch: git.kernel.org

Timelineinfo

01/10/2022 🔍
03/26/2022 +75 days 🔍
03/26/2022 +0 days 🔍
03/27/2022 +1 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2021-4202 (🔍)
GCVE (CVE): GCVE-0-2021-4202
GCVE (VulDB): GCVE-100-195793

Entryinfo

Created: 03/26/2022 07:35
Updated: 03/27/2022 11:44
Changes: 03/26/2022 07:35 (43), 03/27/2022 11:44 (1)
Complete: 🔍
Cache ID: 216::103

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

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