CVE-2023-28746

La exposición de la información a través del estado de la microarquitectura después de la ejecución transitoria de algunos archivos de registro para algunos procesadores Intel(R) Atom(R) puede permitir que un usuario autenticado potencialmente habilite la divulgación de información a través del acceso local.

A vulnerability was found in some Intel Atom Processor's microcode. This issue may allow a malicious actor to achieve a local information disclosure, impacting the data confidentiality of the targeted system.

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.