CLSA-2026-1776179155 Fix of 8 CVEs

SECURITY UPDATE: fix division by zero in YUV coder - debian/patches/CVE-2026-25799.patch: fix division by zero in YUV coder - CVE-2026-25799 SECURITY UPDATE: fix NULL pointer dereference in SFW coder - debian/patches/CVE-2026-25795.patch: fix NULL pointer dereference in SFW coder - CVE-2026-25795...