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avformat/wtvdec: clear sectors

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The code can leave uninitialized holes in the array.
Fixes: use of uninitialized values
Fixes: 70883/clusterfuzz-testcase-minimized-ffmpeg_dem_WTV_fuzzer-6698694567591936

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c95ea03104)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2024-08-07 00:18:51 +02:00
parent 607d002a9d
commit 07b577e6ee
1 changed files with 1 additions and 1 deletions
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libavformat/wtvdec.c
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@@ -183,7 +183,7 @@ static AVIOContext * wtvfile_open_sector(unsigned first_sector, uint64_t length,
int nb_sectors1 = read_ints(s->pb, sectors1, WTV_SECTOR_SIZE / 4);
int i;
wf->sectors = av_malloc_array(nb_sectors1, 1 << WTV_SECTOR_BITS);
wf->sectors = av_calloc(nb_sectors1, 1 << WTV_SECTOR_BITS);
if (!wf->sectors) {
av_free(wf);
return NULL;