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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-19 01:04:07 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-11 20:18:46 +0100 |
| commit | 2f4b8dab94d5437f3fc6ff6eded97feafb42284d (patch) | |
| tree | 5e8f0d6a21ee69cd6378b9c8a9b04ca2921b74d9 /libavcodec/vc1_block.c | |
| parent | 4c189f633eeea870ee8fbc25eae300a76a4a166c (diff) | |
| download | ffmpeg-2f4b8dab94d5437f3fc6ff6eded97feafb42284d.tar.gz | |
avcodec/alac: Check lpc_quant
lpc_quant of 0 produces undefined behavior, thus disallow this.
If valid samples use this then such a sample would be quite
usefull to confirm the correct&lossles handling of this.
Fixes: libavcodec/alac.c:218:25: runtime error: shift exponent -1 is negative
Fixes: 15273/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALAC_fuzzer-5656388535058432
Fixes: 15276/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALAC_fuzzer-5761238417539072
Fixes: 15315/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALAC_fuzzer-5767260766994432
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a6474b899c1153e3bb95e399b6605c3507aea0d0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/vc1_block.c')
0 files changed, 0 insertions, 0 deletions