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avcodec/av1_parse: check for OBU header overread

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer
2018-07-23 13:12:43 -03:00
parent e45ed15594
commit 4e937b1a60
1 changed files with 4 additions and 0 deletions
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4
libavcodec/av1_parse.h
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@@ -118,6 +118,10 @@ static inline int parse_obu_header(const uint8_t *buf, int buf_size,
*obu_size = has_size_flag ? leb128(&gb) *obu_size = has_size_flag ? leb128(&gb)
: buf_size - 1 - extension_flag; : buf_size - 1 - extension_flag;
if (get_bits_left(&gb) < 0)
return AVERROR_INVALIDDATA;
*start_pos = get_bits_count(&gb) / 8; *start_pos = get_bits_count(&gb) / 8;
return 0; return 0;