Kernel memory exhaustion via leaked buffer reference

Memory leak in the Linux kernel 6.8 DRM Xe driver allows local users to exhaust kernel memory through framebuffer creation errors. intel_fb_bo_framebuffer_init retains a buffer-object reference when framebuffer initialization returns an error instead of releasing that reference. Exploitation requires low-privileged local access and repeated access to the DRM Xe error path, with impact limited to a hang or crash from memory exhaustion.