CVE-2023-39368

La falla del mecanismo de protección del regulador de bloqueo del bus para algunos procesadores Intel(R) puede permitir que un usuario no autenticado habilite potencialmente la denegación de servicio a través del acceso a la red.

A vulnerability was found in the bus lock regulator mechanism for some Intel processors models. This issue may allow a malicious actor to achieve a Denial of Service attack, impacting the system availability of the targeted host.

It was discovered that some 3rd and 4th Generation Intel® Xeon® Processors did not properly restrict access to certain hardware features when using Intel® SGX or Intel® TDX. This may allow a privileged local user to potentially further escalate their privileges on the system. This issue only affected Ubuntu 23.10, Ubuntu 22.04 LTS, Ubuntu 20.04 LTS, Ubuntu 18.04 LTS and Ubuntu 16.04 LTS. It was discovered that some Intel® Atom® Processors did not properly clear register state when performing various operations. A local attacker could use this to obtain sensitive information via a transient execution attack. This issue only affected Ubuntu 23.10, Ubuntu 22.04 LTS, Ubuntu 20.04 LTS, Ubuntu 18.04 LTS and Ubuntu 16.04 LTS.