Fix null pointer dereference in opj_j2k_add_mct() (#895)

Fixes openjeg-crashes-2017-07-27/issue879-poc1.j2k of #895
uclouvain · Jul 28, 2017 · 16aeb92 · 16aeb92
1 parent c5bf5ef
commit 16aeb92
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/lib/openjp2/j2k.c b/src/lib/openjp2/j2k.c
@@ -5584,6 +5584,7 @@ static OPJ_BOOL opj_j2k_read_mct(opj_j2k_t *p_j2k,
     if (l_mct_data->m_data) {
         opj_free(l_mct_data->m_data);
         l_mct_data->m_data = 00;
+        l_mct_data->m_data_size = 0;
     }
 
     l_mct_data->m_index = l_indix;