libavcodec/vp5.c:249: error: Buffer Overrun L2
  Offset: [0, max(64, `s->coeff_ctx_last[*]`)] Size: 64.

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

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

libavcodec/vp5.c:181:1: <Length trace>
179. }
180. 
181. static void vp5_parse_coeff(VP56Context *s)
     ^
182. {
183.     VP56RangeCoder *c = &s->c;

libavcodec/vp5.c:181:1: Parameter `s->coeff_ctx[*][*]`
179. }
180. 
181. static void vp5_parse_coeff(VP56Context *s)
     ^
182. {
183.     VP56RangeCoder *c = &s->c;

libavcodec/vp5.c:249:17: Array access: Offset: [0, max(64, s->coeff_ctx_last[*])] Size: 64
247.         if (coeff_idx < ctx_last)
248.             for (i=coeff_idx; i<=ctx_last; i++)
249.                 s->coeff_ctx[vp56_b6to4[b]][i] = 5;
                     ^
250.         s->above_blocks[s->above_block_idx[b]].not_null_dc = s->coeff_ctx[vp56_b6to4[b]][0];
251.     }
