CVE-2023-5717

Se puede aprovechar una vulnerabilidad de escritura fuera de límites del montón en el componente Linux Kernel Performance Events (perf) del kernel de Linux para lograr una escalada de privilegios local. Si se llama a perf_read_group() mientras la lista de hermanos de un evento es más pequeña que la lista de hermanos de su hijo, puede incrementar o escribir en ubicaciones de memoria fuera del búfer asignado. Recomendamos actualizar después del commit 32671e3799ca2e4590773fd0e63aaa4229e50c06.

A flaw was found in the Linux kernel's Performance Events system component. A condition can be triggered that allows data to be written past the end or before the beginning of the intended memory buffer. This issue may lead to a system crash, code execution, or local privilege escalation.

It was discovered that the USB subsystem in the Linux kernel contained a race condition while handling device descriptors in certain situations, leading to a out-of-bounds read vulnerability. A local attacker could possibly use this to cause a denial of service. Lin Ma discovered that the Netlink Transformation subsystem in the Linux kernel did not properly initialize a policy data structure, leading to an out-of-bounds vulnerability. A local privileged attacker could use this to cause a denial of service or possibly expose sensitive information.