Use After Free Affecting kernel-rt-modules-extra package, versions *
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTMODULESEXTRA-1965862
- published 1 Nov 2021
- disclosed 25 Oct 2021
Introduced: 25 Oct 2021
CVE-2021-34981 Open this link in a new tabHow to fix?
There is no fixed version for Centos:8 kernel-rt-modules-extra.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-modules-extra package and not the kernel-rt-modules-extra package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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.