CVE-2026-67301: Out-of-bounds Read

FreeRDP before 3.29.0 contains out-of-bounds read vulnerabilities in the async update message proxy for the PolygonSC and PolygonCB primary drawing orders. When AsyncUpdate is enabled e.g., xfreerdp /async-update, updatemessagePolygonSC and updatemessagePolygonCB allocate a fresh points array but...