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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 22:29:25 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-14 19:55:02 +0100 |
| commit | b24d3bfe66b5cc4eb5dbd0e2f2fdb51aa4f901a2 (patch) | |
| tree | ef29bae2527c6a0d38d6ae6dceb64eecbed5d8da | |
| parent | c000a9128815e7cee4316dc45605259bbaa138ff (diff) | |
| download | ffmpeg-b24d3bfe66b5cc4eb5dbd0e2f2fdb51aa4f901a2.tar.gz | |
avcodec/fmvc: avoid copying uninitialized data
Fixes: Timeout
Fixes: 30049/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FMVC_fuzzer-5986909455253504
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/fmvc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/fmvc.c b/libavcodec/fmvc.c index 5bee96a18d..3701b0849b 100644 --- a/libavcodec/fmvc.c +++ b/libavcodec/fmvc.c @@ -440,6 +440,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, memcpy(dst, src, avctx->width * s->bpp); dst -= frame->linesize[0]; src += s->stride * 4; + if (bytestream2_tell_p(pb) < y*s->stride * 4) + break; } } else { unsigned block, nb_blocks; |