CVE-2020-27067

A flaw use-after-free in the Linux kernel l2tp subsystem was found in the way user initialize and use vpn connection over l2tp. A local user could use this flaw to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent the module l2tp_core from being loaded. Please see https://access.redhat.com/solutions/41278 for information on how to blacklist a kernel module to prevent it from loading automatically.