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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-22 15:22:35 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-31 23:09:35 +0200 |
| commit | 87d87e6587deec1fa8ed5f5c6901535becdb0358 (patch) | |
| tree | e20c85037c22d63490e424699c7d91c01ee4b0b6 | |
| parent | 2611d20d353026f996cb9aaced8b35db37f490d4 (diff) | |
| download | ffmpeg-87d87e6587deec1fa8ed5f5c6901535becdb0358.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>
| -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 988dd18a33..728e591958 100644 --- a/libavcodec/mpegvideo.c +++ b/libavcodec/mpegvideo.c @@ -1069,6 +1069,13 @@ int ff_mpv_common_frame_size_change(MpegEncContext *s) (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0) return err; + /* 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))) return err; |