CVE-2023-46103

La secuencia de instrucciones del procesador genera un comportamiento inesperado en los procesadores Intel(R) Core(TM) Ultra que pueden permitir que un usuario autenticado habilite potencialmente la denegación de servicio a través del acceso local.

A flaw was found in intel-microcode. The sequence of processor instructions leads to unexpected behavior in Intel(R) Core(TM) Ultra processors that may allow an authenticated user to enable a denial of service via local access.

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.