CVE-2022-42896 HIGH

CVE-2022-42896: Info Leak in l2cap_core in the Linux Kernel

Vendor Linux
Product Linux Kernel
Weakness CWE-416
Published November 23, 2022
Last update April 21, 2025

CVSS base score

8.0/10
Attack vector Adjacent
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

What the vulnerability does

01Description

There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth. A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim. We recommend upgrading past commit  https://www.google.com/url https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 https://www.google.com/url

Key dates

02Disclosure timeline

November 23, 2022 CVE published
April 21, 2025 Record updated