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Check that dest is valid for decompression (#3555)

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* add check for valid dest buffer and fuzz on random dest ptr when malloc 0

* add uptrval to linux-kernel

* remove bin files

* get rid of uptrval

* restrict max pointer value check to platforms where sizeof(size_t) == sizeof(void*)
This commit is contained in:
daniellerozenblit
2023-04-01 02:00:55 -04:00
committed by GitHub
parent 7b828aaeb5
commit fcaf06ddb4
6 changed files with 32 additions and 3 deletions
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16
tests/fuzz/fuzz_helpers.c
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@ -23,6 +23,22 @@ void* FUZZ_malloc(size_t size)
return NULL;
}
void* FUZZ_malloc_rand(size_t size, FUZZ_dataProducer_t *producer)
{
if (size > 0) {
void* const mem = malloc(size);
FUZZ_ASSERT(mem);
return mem;
} else {
uintptr_t ptr = 0;
/* Add +- 1M 50% of the time */
if (FUZZ_dataProducer_uint32Range(producer, 0, 1))
FUZZ_dataProducer_int32Range(producer, -1000000, 1000000);
return (void*)ptr;
}
}
int FUZZ_memcmp(void const* lhs, void const* rhs, size_t size)
{
if (size == 0) {