In the Linux kernel, the following vulnerability has been resolved: drm/amd/amdgpu: fix refcount leak Why] the gem object rfb->base.obj[0] is get according to num_planes in amdgpufb_create, but is not put according to num_planes [How] put rfb->base.obj[0] in amdgpu_fbdev_destroy according to num_planes CREATE(Triage):(User=admin) [CVE-2021-47144 (https://nvd.nist.gov/vuln/detail/CVE-2021-47144)