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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-18 21:54:14 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 14:18:21 +0100 |
| commit | 5371e3813444036e0155d70c8e4a57a5a8a75cbd (patch) | |
| tree | 8e4481762e9b381d91f8649f4d44cf18af52b99b | |
| parent | 84a69584232cfadb006ebe3b7946cbd32182b04b (diff) | |
| download | ffmpeg-5371e3813444036e0155d70c8e4a57a5a8a75cbd.tar.gz | |
avcodec/fits: Check bscale
Fixes: division by 0
Fixes: 26208/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FITS_fuzzer-6270472117026816
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 c2ccd76fd000f69e355280b487213fb63821c8aa)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/fits.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/fits.c b/libavcodec/fits.c index ad73ab70de..25c33e06c8 100644 --- a/libavcodec/fits.c +++ b/libavcodec/fits.c @@ -187,6 +187,8 @@ int avpriv_fits_header_parse_line(void *avcl, FITSHeader *header, const uint8_t header->blank = t; header->blank_found = 1; } else if (!strcmp(keyword, "BSCALE") && sscanf(value, "%lf", &d) == 1) { + if (d <= 0) + return AVERROR_INVALIDDATA; header->bscale = d; } else if (!strcmp(keyword, "BZERO") && sscanf(value, "%lf", &d) == 1) { header->bzero = d; |