CVE-2022-1882

Se ha encontrado un fallo de uso después de libre en la funcionalidad de tuberías del kernel de Linux en la forma en que un usuario realiza manipulaciones con la tubería post_one_notification() después de free_pipe_info() que ya ha sido llamada. Este defecto permite a un usuario local bloquear o potencialmente escalar sus privilegios en el sistema

Selim Enes Karaduman discovered that a race condition existed in the General notification queue implementation of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Pawan Kumar Gupta, Alyssa Milburn, Amit Peled, Shani Rehana, Nir Shildan and Ariel Sabba discovered that some Intel processors with Enhanced Indirect Branch Restricted Speculation did not properly handle RET instructions after a VM exits. A local attacker could potentially use this to expose sensitive information.