UBUNTU-CVE-2025-21985

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix out-of-bound accesses WHAT & HOW hpostreamtolinkencodermapping has size MAXHPODP2ENCODERS=4, but location can have size up to 6. As a result, it is necessary to check location against MAXHPODP2ENCODERS...