Signed-off-by: Michael Niedermayer <[email protected]>
---
libavcodec/ac3dec.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c
index a95c204..499971a 100644
--- a/libavcodec/ac3dec.c
+++ b/libavcodec/ac3dec.c
@@ -426,6 +426,10 @@ static int decode_exponents(AC3DecodeContext *s,
group_size = exp_strategy + (exp_strategy == EXP_D45);
for (grp = 0, i = 0; grp < ngrps; grp++) {
expacc = get_bits(gbc, 7);
+ if (expacc >= 125) {
+ av_log(s->avctx, AV_LOG_ERROR, "expacc %d is out-of-range\n",
expacc);
+ return AVERROR_INVALIDDATA;
+ }
dexp[i++] = ungroup_3_in_7_bits_tab[expacc][0];
dexp[i++] = ungroup_3_in_7_bits_tab[expacc][1];
dexp[i++] = ungroup_3_in_7_bits_tab[expacc][2];
--
2.10.2
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