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fuchsia / third_party / ffmpeg / b66884f4aa6701a842bb83b407d546cdb76320d9
commitb66884f4aa6701a842bb83b407d546cdb76320d9[log] [tgz]
authorAndreas Rheinhardt <andreas.rheinhardt@gmail.com>Wed May 27 19:09:14 2020 +0200
committerAndreas Rheinhardt <andreas.rheinhardt@gmail.com>Fri Jul 03 00:04:06 2020 +0200
treeca56b6b071886c839e362cb07e3e0946295e9a68
parenta3a2e782c2ab5ccfcd864f476e6c3b7aa03c8dcf [diff]
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>
1 file changed
tree: ca56b6b071886c839e362cb07e3e0946295e9a68
  1. compat/
  2. doc/
  3. ffbuild/
  4. fftools/
  5. libavcodec/
  6. libavdevice/
  7. libavfilter/
  8. libavformat/
  9. libavresample/
  10. libavutil/
  11. libpostproc/
  12. libswresample/
  13. libswscale/
  14. presets/
  15. tests/
  16. tools/
  17. .gitattributes
  18. .gitignore
  19. .travis.yml
  20. Changelog
  21. configure
  22. CONTRIBUTING.md
  23. COPYING.GPLv2
  24. COPYING.GPLv3
  25. COPYING.LGPLv2.1
  26. COPYING.LGPLv3
  27. CREDITS
  28. INSTALL.md
  29. LICENSE.md
  30. MAINTAINERS
  31. Makefile
  32. README.md
  33. RELEASE
  34. RELEASE_NOTES
README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • ffserver is a multimedia streaming server for live broadcasts.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.