#4587: ouf-of-boundry memory access in cabac(H264)
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Reporter: rakexue | Type: defect
Status: new | Priority: normal
Component: avcodec | Version: unspecified
Keywords: H264 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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The specific h264 file decoding causes some random SIGBUS on arm Android.
CallStack shows the crash in get_cabac_inline(ARM).
Turn off UNCHECKED_BITSTREAM_READER, then find that
get_cabac_inline(plain C ) -> refill2 occasionally accesses the last two
bytes just after the boundry(CABACContext.bytestream_end[0] and
CABACContext.bytestream_end[1]).
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Ticket URL: <https://trac.ffmpeg.org/ticket/4587>
FFmpeg <https://ffmpeg.org>
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