Tencent ncnn

• CVE-2026-112074 Medium 6.3 Tencent ncnn Conversion API mat_pixel.cpp yuv420sp2rgb integer overflow 0.2%
• CVE-2026-112073 Medium 6.3 Tencent ncnn MatMul matmul.cpp matmul_transb out-of-bounds 0.2%
• CVE-2026-50144 High 7.1 ncnn: Out-of-bounds heap write in ParamDict::load_param via unchecked negative parameter id 0.2%