CVE-2023-38575

El intercambio no transparente de objetivos de predicción de retorno entre contextos en algunos procesadores Intel(R) puede permitir que un usuario autorizado habilite potencialmente la divulgación de información a través del acceso local.

A vulnerability was found in some Intel processors that may allow a malicious actor to achieve a local information disclosure, impacting the data confidentiality 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.