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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-22 15:22:35 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:53:29 +0200 |
| commit | f46a15a82dc5d479bbf8e6e8e01754b5c5cd9daa (patch) | |
| tree | 2cd1655e2386b9cf772db2228d0812cf3efbdc2c | |
| parent | cf8fa41490698922020a54152c6889fc0b2a8c0d (diff) | |
| download | ffmpeg-f46a15a82dc5d479bbf8e6e8e01754b5c5cd9daa.tar.gz | |
avcodec/mpegvideo: Update chroma_?_shift in ff_mpv_common_frame_size_change()
Fixes: out of array access
Fixes: 31201/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-4627865612189696.fuzz
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 87d87e6587deec1fa8ed5f5c6901535becdb0358)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mpegvideo.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c index d4d3bea649..f85a75ade8 100644 --- a/libavcodec/mpegvideo.c +++ b/libavcodec/mpegvideo.c @@ -1087,6 +1087,13 @@ int ff_mpv_common_frame_size_change(MpegEncContext *s) (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0) goto fail; + /* set chroma shifts */ + err = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, + &s->chroma_x_shift, + &s->chroma_y_shift); + if (err < 0) + return err; + if ((err = init_context_frame(s))) goto fail; |