CVE-2024-56764

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ublk: separar gendisk del dispositivo ublk si add_disk() falla Dentro de ublk_abort_requests(), gendisk se toma para abortar todas las solicitudes en vuelo. Y ublk_abort_requests() se llama al salir del contexto uring o al gestionar el tiempo de espera. Si add_disk() falla, es posible que gendisk se haya liberado al llamar a ublk_abort_requests(), por lo que se puede producir un use-after-free al obtener la referencia del disco en ublk_abort_requests(). Corrige el error separando gendisk del dispositivo ublk si add_disk() falla.

In the Linux kernel, the following vulnerability has been resolved: ublk: detach gendisk from ublk device if add_disk() fails Inside ublk_abort_requests(), gendisk is grabbed for aborting all inflight requests. And ublk_abort_requests() is called when exiting the uring context or handling timeout. If add_disk() fails, the gendisk may have been freed when calling ublk_abort_requests(), so use-after-free can be caused when getting disk's reference in ublk_abort_requests(). Fixes the bug by detaching gendisk from ublk device if add_disk() fails.

Attila Szász discovered that the HFS+ file system implementation in the Linux Kernel contained a heap overflow vulnerability. An attacker could use a specially crafted file system image that, when mounted, could cause a denial of service or possibly execute arbitrary code. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.