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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-13 16:08:03 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-25 13:30:09 +0200 |
| commit | 07ffe94c172041cfb03109b9bb6b8bf577332bda (patch) | |
| tree | e4278a9eb3b6f8901aa64a8c0fbd4524710b47e0 | |
| parent | f8f5668df590d853429586e1f95cbd9cee38920e (diff) | |
| download | ffmpeg-07ffe94c172041cfb03109b9bb6b8bf577332bda.tar.gz | |
avcodec/fitsdec: Fix division by 0 in size check
Fixes: division by zero
Fixes: 15210/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FITS_fuzzer-5746033243455488
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/fitsdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/fitsdec.c b/libavcodec/fitsdec.c index b0753813c9..67a8bd71f4 100644 --- a/libavcodec/fitsdec.c +++ b/libavcodec/fitsdec.c @@ -143,7 +143,7 @@ static int fits_read_header(AVCodecContext *avctx, const uint8_t **ptr, FITSHead size = abs(header->bitpix) >> 3; for (i = 0; i < header->naxis; i++) { - if (header->naxisn[i] > SIZE_MAX / size) { + if (size && header->naxisn[i] > SIZE_MAX / size) { av_log(avctx, AV_LOG_ERROR, "unsupported size of FITS image"); return AVERROR_INVALIDDATA; } |