kernel: drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl()

An out-of-bounds write vulnerability was found in the Linux kernel's vmwsurfacedefineioctl function, in the 'drivers/gpu/drm/vmwgfx/vmwgfxsurface.c' file. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely...

Linux Kernel 'drivers/gpu/drm/vmwgfx/vmwgfx_surface.c' Local Information Disclosure Vulnerability

The Linux kernel is the kernel used by the operating system Linux, released by the Linux Foundation in the United States. A security vulnerability exists in the 'vmwgbsurfacedefineioctl' function in the drivers/gpu/drm/vmwgfx/vmwgfxsurface.c file of the Linux kernel 4.11.4 and earlier. A local...