Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.10.42 |
Related Weaknesses (CWE)
References
- https://www.zerodayinitiative.com/advisories/ZDI-21-1223/Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1223/Third Party Advisory
FAQ
What is CVE-2021-34981?
CVE-2021-34981 is a vulnerability with a CVSS score of 6.7 (MEDIUM). 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 attack...
How severe is CVE-2021-34981?
CVE-2021-34981 has been rated MEDIUM with a CVSS base score of 6.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-34981?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.