NULL pointer dereference vulnerability in vmw_surface_define_ioctl function in Linux kernel through 4.10.5

CVE-2017-7261 · MEDIUM Severity

AV:L/AC:L/AU:N/C:N/I:N/A:C

The vmw_surface_define_ioctl function in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel through 4.10.5 does not check for a zero value of certain levels data, which allows local users to cause a denial of service (ZERO_SIZE_PTR dereference, and GPF and possibly panic) via a crafted ioctl call for a /dev/dri/renderD* device.

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