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avcodec/hevc: Check num_entry_point_offsets
Fixes CID1239099 part 2 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@@ -707,7 +707,14 @@ static int hls_slice_header(HEVCContext *s)
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sh->num_entry_point_offsets = 0;
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if (s->pps->tiles_enabled_flag || s->pps->entropy_coding_sync_enabled_flag) {
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sh->num_entry_point_offsets = get_ue_golomb_long(gb);
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unsigned num_entry_point_offsets = get_ue_golomb_long(gb);
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// It would be possible to bound this tighter but this here is simpler
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if (sh->num_entry_point_offsets > get_bits_left(gb)) {
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av_log(s->avctx, AV_LOG_ERROR, "num_entry_point_offsets %d is invalid\n", num_entry_point_offsets);
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return AVERROR_INVALIDDATA;
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}
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sh->num_entry_point_offsets = num_entry_point_offsets;
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if (sh->num_entry_point_offsets > 0) {
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int offset_len = get_ue_golomb_long(gb) + 1;
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int segments = offset_len >> 4;
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