diff options
| author | Michael Niedermayer <[email protected]> | 2019-11-25 21:39:48 +0100 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2020-04-23 21:29:01 +0200 |
| commit | ceb35853cb1fa7bff31c55150c90b49ea4005706 (patch) | |
| tree | 994b3ee3ec67ab96de8d59bc4f1c2f460a2a1a58 | |
| parent | 4326c5383d8eaefbaa744f62e898cc953dde58b4 (diff) | |
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 <[email protected]>
(cherry picked from commit 89fd76db71d9d4f87c51fee2a2edf99662444df7)
Signed-off-by: Michael Niedermayer <[email protected]>
| -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 87e5a7d5ab..c898fdad0e 100644 --- a/libavcodec/cook.c +++ b/libavcodec/cook.c @@ -752,7 +752,7 @@ 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); |