libavcodec/vp5.c:248: error: Buffer Overrun L2
  Offset: [0, max(64, `s->coeff_ctx_last[*]`)] Size: 64.

libavcodec/vp5.c:200:14: <Offset trace>
198.         model2 = model->coeff_dcct[pt][ctx];
199. 
200.         for (coeff_idx=0; coeff_idx<64; ) {
                  ^
201.             if (vp56_rac_get_prob(c, model2[0])) {
202.                 if (vp56_rac_get_prob(c, model2[2])) {

libavcodec/vp5.c:200:14: Assignment
198.         model2 = model->coeff_dcct[pt][ctx];
199. 
200.         for (coeff_idx=0; coeff_idx<64; ) {
                  ^
201.             if (vp56_rac_get_prob(c, model2[0])) {
202.                 if (vp56_rac_get_prob(c, model2[2])) {

libavcodec/vp5.c:180:1: <Length trace>
178. }
179. 
180. static void vp5_parse_coeff(vp56_context_t *s)
     ^
181. {
182.     vp56_range_coder_t *c = &s->c;

libavcodec/vp5.c:180:1: Parameter `s->coeff_ctx[*][*]`
178. }
179. 
180. static void vp5_parse_coeff(vp56_context_t *s)
     ^
181. {
182.     vp56_range_coder_t *c = &s->c;

libavcodec/vp5.c:248:17: Array access: Offset: [0, max(64, s->coeff_ctx_last[*])] Size: 64
246.         if (coeff_idx < ctx_last)
247.             for (i=coeff_idx; i<=ctx_last; i++)
248.                 s->coeff_ctx[vp56_b6to4[b]][i] = 5;
                     ^
249.         s->above_blocks[s->above_block_idx[b]].not_null_dc = s->coeff_ctx[vp56_b6to4[b]][0];
250.     }
