m->s_temp->style_start = AV_RB16(tsmb);
tsmb += 2;
m->s_temp->style_end = AV_RB16(tsmb);
+
+ if ( m->s_temp->style_end < m->s_temp->style_start
+ || (m->count_s && m->s_temp->style_start < m->s[m->count_s - 1]->style_end)) {
+ av_freep(&m->s_temp);
+ mov_text_cleanup(m);
+ return AVERROR(ENOMEM);
+ }
+
tsmb += 2;
m->s_temp->style_fontID = AV_RB16(tsmb);
tsmb += 2;