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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-09-30 08:50:41 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-10 14:34:19 +0200 |
| commit | 4a3303d52096337dc109fbd523ecb4b46cddace1 (patch) | |
| tree | ee9ec2245b87c2506b943520d835644f2932abc8 | |
| parent | a76a516e761ae950d2f5ccd4469ea8d3416718f2 (diff) | |
| download | ffmpeg-4a3303d52096337dc109fbd523ecb4b46cddace1.tar.gz | |
avcodec/fitsdec: Fail on 0 naxisn
Fixes: Timeout (100+ sec -> 23ms)
Fixes: 17769/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FITS_fuzzer-5678314672357376
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/fitsdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/fitsdec.c b/libavcodec/fitsdec.c index a20b8faf9e..1f06754f8b 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 (size && header->naxisn[i] > SIZE_MAX / size) { + if (size == 0 || header->naxisn[i] > SIZE_MAX / size) { av_log(avctx, AV_LOG_ERROR, "unsupported size of FITS image"); return AVERROR_INVALIDDATA; } |