Microsoft Windows - 'IOCTL_DISK_GET_DRIVE_GEOMETRY_EX' Kernel partmgr Pool Memory Disclosure

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1156&desc=2 We have discovered that the handler of the IOCTLDISKGETDRIVEGEOMETRYEX IOCTL in partmgr.sys discloses portions of uninitialized pool memory to user-mode clients, due to output structure alignment holes. On our test...