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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-08-20 01:05:35 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-08-26 20:31:09 +0200 |
| commit | b9ea493afe8576efe3de60f8c6723f9f155de0d8 (patch) | |
| tree | 71658e9a7d826981896cba8c3033625c7ff92279 | |
| parent | ad29f9e47cb848e11ee1d358d2bae15cd35ef04b (diff) | |
| download | ffmpeg-b9ea493afe8576efe3de60f8c6723f9f155de0d8.tar.gz | |
avcodec/tiff: Check jpeg context against jpeg frame parameters
Fixes: out of array access
Fixes: 24825/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-6326925027704832
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/tiff.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 86f8487086..8a42e677ce 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -919,6 +919,11 @@ static int dng_decode_jpeg(AVCodecContext *avctx, AVFrame *frame, /* Copy the outputted tile's pixels from 'jpgframe' to 'frame' (final buffer) */ + if (s->jpgframe->width != s->avctx_mjpeg->width || + s->jpgframe->height != s->avctx_mjpeg->height || + s->jpgframe->format != s->avctx_mjpeg->pix_fmt) + return AVERROR_INVALIDDATA; + /* See dng_blit for explanation */ if (s->avctx_mjpeg->width == w * 2 && s->avctx_mjpeg->height == h / 2 && |