CVE-2021-42252

Se ha detectado un problema en la función aspeed_lpc_ctrl_mmap en el archivo drivers/soc/aspeed/aspeed-lpc-ctrl.c en el kernel de Linux versiones anteriores a 5.14.6. Unos atacantes locales capaces de acceder a la interfaz de control de Aspeed LPC podrían sobrescribir memoria en el kernel y potencialmente ejecutar privilegios, también se conoce como CID-b49a0e69a7b1. Esto ocurre porque una determinada comparación usa valores que no son de tamaño de memoria

It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service or possibly execute arbitrary code. It was discovered that the Infiniband RDMA userspace connection manager implementation in the Linux kernel contained a race condition leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possible execute arbitrary code. Various other issues were also addressed.