Update to 2.53.22
Comment
It was discovered that LXD, a system container and virtual machine manager, is prone to a local privilege escalation vulnerability if unprivileged users are allowed to access LXD through lxd-user.
A vulnerability was discovered in the ec2tokens and s3tokens APIs of Keystone, the OpenStack identity service, which may result in authorisation bypass or privilege escalation if /v3/ec2tokens or /v3/s3tokens are reachable by unauthenticated clients.
The system could be made to expose sensitive information.
Several security issues were fixed in the Linux kernel.