kernel: Integer overflow in drivers/gpu/drm/udl/udl_fb.c:udl_fb_mmap() can allow attackers to execute code in kernel space

A an integer overflow vulnerability was discovered in the Linux kernel, from version 3.4 through 4.15, in the drivers/gpu/drm/udl/udlfb.c:udlfbmmap function. An attacker with access to the udldrmfb driver could exploit this to obtain full read and write permissions on kernel physical pages,...