In the Linux kernel, the following vulnerability has been resolved:[EOL][EOL]drm/mxsfb: Disable overlay plane in mxsfb_plane_overlay_atomic_disable()[EOL][EOL]When disabling overlay plane in mxsfb_plane_overlay_atomic_update(),[EOL]overlay plane's framebuffer pointer is NULL. So, dereferencing it would[EOL]cause a kernel Oops(NULL pointer dereferencing). Fix the issue by[EOL]disabling overlay plane in mxsfb_plane_overlay_atomic_disable() instead.
