CVE-2022-1974

Se ha encontrado un fallo de uso de memoria previamente liberada en la funcionalidad del núcleo NFC del kernel de Linux debido a una condición de carrera entre la creación y el borrado de kobject. Esta vulnerabilidad permite a un atacante local con privilegios CAP_NET_ADMIN filtrar información del kernel

Zhenpeng Lin discovered that the network packet scheduler implementation in the Linux kernel did not properly remove all references to a route filter before freeing it in some situations. A local attacker could use this to cause a denial of service or execute arbitrary code. It was discovered that the netfilter subsystem of the Linux kernel did not prevent one nft object from referencing an nft set in another nft table, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or execute arbitrary code.