OSV-2026-568 Heap-buffer-overflow in ultrahdr::IccHelper::readIccColorGamut

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=501676165 Crash type: Heap-buffer-overflow READ 1 Crash state: ultrahdr::IccHelper::readIccColorGamut ultrahdr::JpegR::decodeJPEGR uhdrdecode...