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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-25 21:39:48 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-02 19:55:09 +0200 |
| commit | d22da8f54c97ed66e23c0ef57163eb4874dbcd4e (patch) | |
| tree | 82b8235e26d2d1f2dc64d1a4ea09c473ee78cec1 /libavcodec | |
| parent | 0f8f37a99418039923e6db8e8bbc53fe5fac1167 (diff) | |
| download | ffmpeg-d22da8f54c97ed66e23c0ef57163eb4874dbcd4e.tar.gz | |
avcodec/cook: Use 3 stage VLC decoding for channel_coupling
Fixes: shift exponent -1 is negative
Fixes: out of array read
Fixes: 19028/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_COOK_fuzzer-5759766471376896
Fixes: 19037/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_COOK_fuzzer-5734106625474560
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 89fd76db71d9d4f87c51fee2a2edf99662444df7)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/cook.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/cook.c b/libavcodec/cook.c index dbf55c8226..14ff389d00 100644 --- a/libavcodec/cook.c +++ b/libavcodec/cook.c @@ -759,7 +759,7 @@ static int decouple_info(COOKContext *q, COOKSubpacket *p, int *decouple_tab) for (i = 0; i < length; i++) decouple_tab[start + i] = get_vlc2(&q->gb, p->channel_coupling.table, - p->channel_coupling.bits, 2); + p->channel_coupling.bits, 3); else for (i = 0; i < length; i++) { int v = get_bits(&q->gb, p->js_vlc_bits); |