CVE-2021-34981: Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability
Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the CMTP module. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-11977.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-34981?
CVE-2021-34981 has been classified as a high severity vulnerability due to its potential for privilege escalation.
How do I fix CVE-2021-34981?
To fix CVE-2021-34981, it is recommended to update to the latest version of the Linux Kernel that addresses this vulnerability.
Who is affected by CVE-2021-34981?
CVE-2021-34981 affects installations of the Linux Kernel where the Bluetooth CMTP module is enabled.
What are the potential impacts of CVE-2021-34981?
The main impact of CVE-2021-34981 is that it allows local attackers to escalate privileges on affected systems.
How can an attacker exploit CVE-2021-34981?
An attacker can exploit CVE-2021-34981 by first executing high-privileged code on the target system before leveraging the vulnerability for privilege escalation.