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fix potential use-after-free when reallocating cache

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This commit is contained in:
tevador 2020-06-27 20:21:06 +02:00
parent 7741eb1e97
commit 32ab5dea54
2 changed files with 4 additions and 1 deletions
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2
src/randomx.cpp
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@ -329,7 +329,7 @@ extern "C" {
void randomx_vm_set_cache(randomx_vm *machine, randomx_cache* cache) { void randomx_vm_set_cache(randomx_vm *machine, randomx_cache* cache) {
assert(machine != nullptr); assert(machine != nullptr);
assert(cache != nullptr && cache->isInitialized()); assert(cache != nullptr && cache->isInitialized());
if (machine->cacheKey != cache->cacheKey) { if (machine->cacheKey != cache->cacheKey || machine->getMemory() != cache->memory) {
machine->setCache(cache); machine->setCache(cache);
machine->cacheKey = cache->cacheKey; machine->cacheKey = cache->cacheKey;
} }

3
src/virtual_machine.hpp
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@ -54,6 +54,9 @@ public:
{ {
return program; return program;
} }
const uint8_t* getMemory() const {
return mem.memory;
}
protected: protected:
void initialize(); void initialize();
alignas(64) randomx::Program program; alignas(64) randomx::Program program;