The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2021-34981)

Note that Nessus relies on the presence of the package as reported by the vendor.

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2021-34981

medium Nessus Plugin ID 223822

Version 1.2

Version 1.1

Version 1.2 Sep 3, 2025, 6:28 AM CVSS metrics ("CVSSv2 score" set to 7.2) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C") CVSS metrics ("CVSSv3 score" set to 6.7) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H") CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on CVE-2021-34981, severity increased from "Medium" to "High") CVSSv2 severity (based on None, severity decreased from "High" to "Low") CVSSv3 severity (based on None, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202509030628
Version 1.1 Mar 5, 2025, 8:29 AM New Plugin Feed: 202503050829