Executive Summary

Informations
Name CVE-2021-34981 First vendor Publication 2024-05-07
Vendor Cve Last vendor Modification 2025-08-14

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 6.7
Base Score 6.7 Environmental Score 6.7
impact SubScore 5.9 Temporal Score 6.7
Exploitabality Sub Score 0.8
 
Attack Vector Local Attack Complexity Low
Privileges Required High User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34981

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 3434

Sources (Detail)

https://www.zerodayinitiative.com/advisories/ZDI-21-1223/
Source Url

Alert History

If you want to see full details history, please login or register.
0
1
2
3
Date Informations
2025-08-18 17:20:50
  • Multiple Updates
2024-11-25 09:25:41
  • Multiple Updates
2024-05-08 17:27:29
  • Multiple Updates
2024-05-08 05:27:25
  • First insertion