CVE-2022-35408

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)

Se ha detectado un problema en InsydeH2O con el kernel versiones 5.0 hasta 5.5. Una vulnerabilidad de llamada de SMM en el controlador de SMM en UsbLegacyControlSmm conlleva a una posible ejecución de código arbitrario en SMM y una escalada de privilegios. Un atacante podría sobrescribir los punteros de las funciones en la tabla EFI_BOOT_SERVICES antes de que sea desencadenado el manejador USB SMI. (Esto no es explotable desde el código que es ejecutado en el sistema operativo)