Linux Kernel Bluetooth l2cap_core.c l2cap_conn_del 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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6.5$0-$5k0.58

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel. The impacted element is the function l2cap_conn_del of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation results in use after free. This vulnerability is cataloged as CVE-2022-3640. There is no 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) (unknown version). Affected is the function l2cap_conn_del of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 10/21/2022. The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2022-3640. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 241175 (Ubuntu 14.04 LTS / 16.04 LTS : Linux kernel vulnerabilities (USN-7607-1)), 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 databases at Tenable (241175) and CERT Bund (WID-SEC-2024-1086). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • SUSE Linux
  • IBM QRadar SIEM

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (VulDB): 🔍

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: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 241175
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS : Linux kernel vulnerabilities (USN-7607-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

10/21/2022 🔍
10/21/2022 +0 days 🔍
10/21/2022 +0 days 🔍
10/17/2025 +1092 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2022-64ab9153c0
Status: Confirmed

CVE: CVE-2022-3640 (🔍)
GCVE (CVE): GCVE-0-2022-3640
GCVE (VulDB): GCVE-100-211944
CERT Bund: WID-SEC-2024-1086 - IBM QRadar SIEM: Mehrere Schwachstellen

Entryinfo

Created: 10/21/2022 13:23
Updated: 10/17/2025 05:14
Changes: 10/21/2022 13:23 (41), 11/19/2022 08:54 (3), 11/19/2022 08:56 (21), 07/03/2025 01:25 (16), 10/17/2025 05:14 (7)
Complete: 🔍
Cache ID: 216:AEA:103

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

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