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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-06-14 23:45:46 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-06-15 20:41:15 +0200 |
| commit | 8e12af29d1a3f95c9e952d78354e3c8b1c0431a8 (patch) | |
| tree | 195c84f951b0c2a2b7e30ca4dbf89fe59699073d | |
| parent | 716b5c6ec9f856ea973298c8e319f041871080e7 (diff) | |
| download | ffmpeg-n4.3.tar.gz | |
avcodec/tiff: Check stride for dngn4.3
Fixes: assertion failure
Fixes: 23422/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5746026064642048
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 276dfa9d91ee50183824612803891b7d066e8f00)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/tiff.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 010943c38c..dc24d055ec 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -679,6 +679,9 @@ static int tiff_unpack_strip(TiffContext *s, AVFrame *p, uint8_t *dst, int strid return 0; } + if (is_dng && stride == 0) + return AVERROR_INVALIDDATA; + for (line = 0; line < lines; line++) { if (src - ssrc > size) { av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n"); |