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authorAndreas Rheinhardt <andreas.rheinhardt@gmail.com>2020-05-27 19:09:14 +0200
committerAndreas Rheinhardt <andreas.rheinhardt@gmail.com>2020-07-03 17:11:15 +0200
commit3df2eab778418120d727bf9a2a05969a367d40d8 (patch)
tree1576feadf882e13c39bacca6624f4056f5917159 /libavformat/movenc.h
parentfd43c6dc0e8e77c894f5373a2ad5924a7632b2cb (diff)
downloadffmpeg-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')
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