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author | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-05-27 19:09:14 +0200 |
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committer | Andreas Rheinhardt <andreas.rheinhardt@gmail.com> | 2020-07-03 17:11:15 +0200 |
commit | 3df2eab778418120d727bf9a2a05969a367d40d8 (patch) | |
tree | 1576feadf882e13c39bacca6624f4056f5917159 /libavformat/movenc.h | |
parent | fd43c6dc0e8e77c894f5373a2ad5924a7632b2cb (diff) | |
download | ffmpeg-3df2eab778418120d727bf9a2a05969a367d40d8.tar.gz |
avcodec/hevc_mp4toannexb_bsf: Check NAL size against available input
The hevc_mp4toannexb bsf does not explicitly check whether a NAL unit
is so big that it extends beyond the end of the input packet; it does so
only implicitly by using the checked version of the bytestream2 API.
But this has downsides compared to real checks: It can lead to huge
allocations (up to 2GiB) even when the input packet is just a few bytes.
And furthermore it leads to uninitialized data being output.
So add a check to error out early if it happens.
Also check directly whether there is enough data for the length field.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit ea1b71e82f5a1752d59d3bfb9704092a79eba6b5)
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Diffstat (limited to 'libavformat/movenc.h')
0 files changed, 0 insertions, 0 deletions