CVE-2026-31571 drm/i915: Unlink NV12 planes earlier

In the Linux kernel, the following vulnerability has been resolved: drm/i915: Unlink NV12 planes earlier unlinknv12plane will clobber parts of the plane state potentially already set up by planeatomiccheck, so we must make sure not to call the two in the wrong order. The problem happens when a...