Tencent Ncnn vulnerabilities

• tencent ncnn Tencent ncnn Conversion API mat_pixel.cpp yuv420sp2rgb integer overflow CVE-2026-112074 5.3 MediumOctober 19, 2026
• tencent ncnn Tencent ncnn MatMul matmul.cpp matmul_transb out-of-bounds CVE-2026-112073 5.3 MediumOctober 19, 2026
• tencent ncnn ncnn: Out-of-bounds heap write in ParamDict::load_param via unchecked negative parameter id CVE-2026-50144 7.1 HighJuly 15, 2026