CVE-2021-27363

Se detectó un problema en el kernel de Linux versiones hasta 5.11.3. Se puede usar un filtrado del puntero del kernel para determinar la dirección de la estructura iscsi_transport. Cuando se registra un transporte iSCSI con el subsistema iSCSI, el handle de transporte está disponible para usuarios sin privilegios por medio del sistema de archivos sysfs, en /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. Cuando se lee, se llama a la función show_transport_handle (en el archivo drivers/scsi/scsi_transport_iscsi.c), que filtra el handle. Este handle es en realidad el puntero a una estructura iscsi_transport en las variables globales del módulo del kernel

A flaw was found in the way access to sessions and handles was handled in the iSCSI driver in the Linux kernel. A local user could use this flaw to leak iSCSI transport handle kernel address or end arbitrary iSCSI connections on the system.

Red Hat Advanced Cluster Management for Kubernetes 2.2.2 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console-with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs and security issues. Issues addressed include code execution, denial of service, integer overflow, and null pointer vulnerabilities.