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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-23 23:37:10 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-25 02:11:13 +0200 |
| commit | 7719b8ccc790b6e1325af0afe2b65e2334a7173c (patch) | |
| tree | cd478c2e00e2b5ecdb93f3303b85863774b02a8e | |
| parent | 404dc6bab5cd1904daeb11affe3c67c02b8eec40 (diff) | |
| download | ffmpeg-streaming-7719b8ccc790b6e1325af0afe2b65e2334a7173c.zip ffmpeg-streaming-7719b8ccc790b6e1325af0afe2b65e2334a7173c.tar.gz | |
avcodec/magicyuv: Check bits left in flags&1 branch
Fixes: Timeout
Fixes: 8690/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MAGICYUV_fuzzer-6542020913922048
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/magicyuv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/magicyuv.c b/libavcodec/magicyuv.c index 9c6e1ba..1a129c2 100644 --- a/libavcodec/magicyuv.c +++ b/libavcodec/magicyuv.c @@ -240,6 +240,8 @@ static int magy_decode_slice10(AVCodecContext *avctx, void *tdata, dst = (uint16_t *)p->data[i] + j * sheight * stride; if (flags & 1) { + if (get_bits_left(&gb) < bps * width * height) + return AVERROR_INVALIDDATA; for (k = 0; k < height; k++) { for (x = 0; x < width; x++) dst[x] = get_bits(&gb, bps); @@ -368,6 +370,8 @@ static int magy_decode_slice(AVCodecContext *avctx, void *tdata, dst = p->data[i] + j * sheight * stride; if (flags & 1) { + if (get_bits_left(&gb) < 8* width * height) + return AVERROR_INVALIDDATA; for (k = 0; k < height; k++) { for (x = 0; x < width; x++) dst[x] = get_bits(&gb, 8); |
