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avcodec/movtextenc: Check for too long subtitles

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Reviewed-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-11-30 09:21:35 +01:00
parent 0b934f8f17
commit f8e5e1c523
1 changed files with 2 additions and 0 deletions
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libavcodec/movtextenc.c
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@ -667,6 +667,8 @@ static int mov_text_encode_frame(AVCodecContext *avctx, unsigned char *buf,
}
}
if (s->byte_count > UINT16_MAX)
return AVERROR(ERANGE);
AV_WB16(buf, s->byte_count);
buf += 2;