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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-14 15:10:28 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-15 21:31:43 +0100 |
| commit | bfa8272f405314582e8f099ec1a9249232553c9c (patch) | |
| tree | 183f71e1dc85dd7694069eb4f2f6312864d365b8 | |
| parent | 73ee53f317418a5719f6169e6171b40f90d18321 (diff) | |
| download | ffmpeg-bfa8272f405314582e8f099ec1a9249232553c9c.tar.gz | |
vcodec/agm: Alloc based on coded dimensions
Fixes: out of array read
Fixes: 18715/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AGM_fuzzer-5659333417500672
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>
| -rw-r--r-- | libavcodec/agm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/agm.c b/libavcodec/agm.c index 3b2c21e9a7..89f85f03c6 100644 --- a/libavcodec/agm.c +++ b/libavcodec/agm.c @@ -827,7 +827,7 @@ static int decode_intra(AVCodecContext *avctx, GetBitContext *gb, AVFrame *frame static int decode_motion_vectors(AVCodecContext *avctx, GetBitContext *gb) { AGMContext *s = avctx->priv_data; - int nb_mvs = ((avctx->height + 15) >> 4) * ((avctx->width + 15) >> 4); + int nb_mvs = ((avctx->coded_height + 15) >> 4) * ((avctx->coded_width + 15) >> 4); int ret, skip = 0, value, map; av_fast_padded_malloc(&s->mvectors, &s->mvectors_size, |