CVE-2019-19059

Una pérdida de memoria en la función adis_update_scan_mode() en el archivo drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c en el kernel de Linux versiones anteriores a la versión 5.3.9, permite a atacantes causar una denegación de servicio (consumo de memoria), también se conoce como CID-ab612b1daf41.

A flaw was found in the way the Intel Wireless driver in the Linux kernel handled resource cleanup during Gen 3 device initialization. This flaw allows an attacker with the ability to restrict access to DMA coherent memory on device initialization, to crash the system.

It was discovered that the KVM implementation in the Linux kernel, when paravirtual TLB flushes are enabled in guests, the hypervisor in some situations could miss deferred TLB flushes or otherwise mishandle them. An attacker in a guest VM could use this to expose sensitive information. Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested guest access the resources of a parent guest in certain situations. An attacker could use this to expose sensitive information. Various other issues were also addressed.