Linux Kernel up to 6.0.10 l2cap_config_req Packet l2cap_core.c integer overflow

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.0.10. Affected by this vulnerability is an unknown functionality of the file net/bluetooth/l2cap_core.c of the component l2cap_config_req Packet Handler. This manipulation causes integer overflow. This vulnerability appears as CVE-2022-45934. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.0.10 (Operating System). It has been declared as critical. Affected by this vulnerability is some unknown processing of the file net/bluetooth/l2cap_core.c of the component l2cap_config_req Packet Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in the Linux kernel through 6.0.10. l2cap_config_req in net/bluetooth/l2cap_core.c has an integer wraparound via L2CAP_CONF_REQ packets.

The weakness was presented 11/27/2022. It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2022-45934 since 11/27/2022. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/19/2025).

The vulnerability scanner Nessus provides a plugin with the ID 236642 (Alibaba Cloud Linux 3 : 0042: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2023:0042)), 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 (236642). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.0.0
• 6.0.1
• 6.0.2
• 6.0.3
• 6.0.4
• 6.0.5
• 6.0.6
• 6.0.7
• 6.0.8
• 6.0.9
• 6.0.10

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion