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avcodec/cbs_mpeg2: Treat slices without data as invalid

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They are spec-incompliant.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Andreas Rheinhardt
2019-12-09 23:26:04 +01:00
committed by Michael Niedermayer
parent b1aecad9ea
commit ce920f4793
1 changed files with 3 additions and 0 deletions
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3
libavcodec/cbs_mpeg2.c
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@@ -245,6 +245,9 @@ static int cbs_mpeg2_read_unit(CodedBitstreamContext *ctx,
if (err < 0)
return err;
if (!get_bits_left(&gbc))
return AVERROR_INVALIDDATA;
pos = get_bits_count(&gbc);
len = unit->data_size;