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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-12-19 00:22:04 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 14:18:21 +0100 |
| commit | 554eee05f29e9ba41d1b312b564cc4a510b236e3 (patch) | |
| tree | ef997035606c6921d146da9ff4c33e2abffe28f5 | |
| parent | 684b4a1dec40c3ef004476e70da3a779f1f01252 (diff) | |
| download | ffmpeg-554eee05f29e9ba41d1b312b564cc4a510b236e3.tar.gz | |
avcodec/ffv1dec: Fix off by 1 error with quant tables
Fixes: assertion failure
Fixes: 28447/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFV1_fuzzer-5369575948550144
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 5cae71d2b722d0beed4d46f189db42fbb57d877b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ffv1dec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index c704373cfe..0a3f425493 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -786,7 +786,7 @@ static int read_header(FFV1Context *f) if (f->version == 2) { int idx = get_symbol(c, state, 0); - if (idx > (unsigned)f->quant_table_count) { + if (idx >= (unsigned)f->quant_table_count) { av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n"); return AVERROR_INVALIDDATA; |