1diff --git a/third_party/libopenjpeg20/j2k.c b/third_party/libopenjpeg20/j2k.c 2index 8e35b33ee..d95963a5c 100644 3--- a/third_party/libopenjpeg20/j2k.c 4+++ b/third_party/libopenjpeg20/j2k.c 5@@ -9527,6 +9527,10 @@ static OPJ_BOOL opj_j2k_read_SPCod_SPCoc(opj_j2k_t *p_j2k, 6 p_j2k->m_specific_param.m_decoder.m_default_tcp; 7 8 /* precondition again */ 9+ if (compno >= p_j2k->m_private_image->numcomps) { 10+ return OPJ_FALSE; 11+ } 12+ 13 assert(compno < p_j2k->m_private_image->numcomps); 14 15 l_tccp = &l_tcp->tccps[compno]; 16