libavcodec/vp6.c:441: error: Buffer Overrun L1
  Offset: [5, +oo] (⇐ [0, +oo] + 5) Size: 2.

libavcodec/vp6.c:409:1: <Length trace>
407. }
408. 
409. static void vp6_parse_coeff(VP56Context *s)
     ^
410. {
411.     VP56RangeCoder *c = s->ccp;

libavcodec/vp6.c:409:1: Parameter `s->modelp->coeff_dccv[*]`
407. }
408. 
409. static void vp6_parse_coeff(VP56Context *s)
     ^
410. {
411.     VP56RangeCoder *c = s->ccp;

libavcodec/vp6.c:427:9: Assignment
425.         ctx = s->left_block[vp56_b6to4[b]].not_null_dc
426.               + s->above_blocks[s->above_block_idx[b]].not_null_dc;
427.         model1 = model->coeff_dccv[pt];
             ^
428.         model2 = model->coeff_dcct[pt][ctx];
429. 

libavcodec/vp6.c:441:62: Array access: Offset: [5, +oo] (⇐ [0, +oo] + 5) Size: 2
439.                     } else {
440.                         if (vp56_rac_get_prob(c, model2[4]))
441.                             coeff = 3 + vp56_rac_get_prob(c, model1[5]);
                                                                  ^
442.                         else
443.                             coeff = 2;
