Linux Kernel KGDB/KDB kdb_main.c kdb_check_for_lockdown access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel and classified as critical. Affected by this issue is the function kdb_check_for_lockdown of the file kdb_main.c of the component KGDB/KDB. The manipulation results in access control. This vulnerability is identified as CVE-2022-21499. An attack on the physical device is feasible. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel (Operating System) (the affected version is unknown). Affected is the function kdb_check_for_lockdown of the file kdb_main.c of the component KGDB/KDB. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 06/10/2022. The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2022-21499 since 11/15/2021. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 276283 (TencentOS Server 2: kernel (TSSA-2024:1021)), 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 git.kernel.org.

The vulnerability is also documented in the vulnerability database at Tenable (276283). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.1
VulDB Temp Score: 5.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (Oracle): 🔍

CVSSv2info

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

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 276283
Nessus Name: TencentOS Server 2: kernel (TSSA-2024:1021)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

11/15/2021 🔍
06/09/2022 +206 days 🔍
06/10/2022 +0 days 🔍
11/24/2025 +1263 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-21499 (🔍)
GCVE (CVE): GCVE-0-2022-21499
GCVE (VulDB): GCVE-100-201576

Entryinfo

Created: 06/10/2022 00:25
Updated: 11/24/2025 05:22
Changes: 06/10/2022 00:25 (41), 06/15/2022 07:44 (1), 06/15/2022 07:49 (12), 11/24/2025 05:22 (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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