CVE-2026-33900: integer truncation/wraparound in the viff encoder that could
trigger an out-of-bounds heap write on 32-bit builds (GHSA-v67w-737x-v2c9;
upstream b6c01a5a23f1e350ebe2db78c7cc326db2e320c9)
CVE-2026-33905: out-of-bounds read in SampleImage when sample:offset is set
via -sample define (GHSA-pcvx-ph33-r5vv; upstream
140fc7b01fa7d870b3bc8453fb7adccfb7c1e202 with follow-up
8d73954bf7e13a352e71a32cf7d18905577f17e8)