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avcodec/fits: Clear naxis

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Fixes: Use of uninitialized memory
Fixes: 423673969/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FITS_DEC_fuzzer-5602250833854464

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2025-08-03 01:47:54 +02:00 • committed by michaelni
parent 16d663d371
commit 1687daa93c
1 changed files with 2 additions and 0 deletions
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2
libavcodec/fits.c
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@ -32,6 +32,8 @@ int avpriv_fits_header_init(FITSHeader *header, FITSHeaderState state)
{
header->state = state;
header->naxis_index = 0;
header->naxis = 0;
memset(header->naxisn, 0, sizeof(header->naxisn));
header->blank_found = 0;
header->pcount = 0;
header->gcount = 1;