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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-12-01 22:16:19 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-01-15 00:57:27 +0100 |
| commit | 3c2207b10f0e29f849f098faa9f8426e086bfaad (patch) | |
| tree | 83a16e4cdfbb77d923b487bc4aa7cd44cd9bc3ce | |
| parent | 4ff4fd41791c4cb22dd87cb115bd6f7980f4a73a (diff) | |
| download | ffmpeg-3c2207b10f0e29f849f098faa9f8426e086bfaad.tar.gz | |
avcodec/msvideo1: Check for too small dimensions
Such low resolution would result in empty output as a minimum of 4x4 is needed
We could also check for multiple of 4 dimensions but that is not needed
Fixes: Timeout
Fixes: 11191/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MSVIDEO1_fuzzer-5739529588178944
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 953bd58861ad933e614510140b05a61e3d1375be)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/msvideo1.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/msvideo1.c b/libavcodec/msvideo1.c index 29700f54b6..de048d8b6f 100644 --- a/libavcodec/msvideo1.c +++ b/libavcodec/msvideo1.c @@ -62,6 +62,9 @@ static av_cold int msvideo1_decode_init(AVCodecContext *avctx) s->avctx = avctx; + if (avctx->width < 4 || avctx->height < 4) + return AVERROR_INVALIDDATA; + /* figure out the colorspace based on the presence of a palette */ if (s->avctx->bits_per_coded_sample == 8) { s->mode_8bit = 1; |