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Use bigger random numbers for stack guard

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This commit is contained in:
Alex 2023-03-02 02:31:31 +02:00
parent 18dd70b139
commit e851d32e49
Signed by untrusted user who does not match committer: enderice2
GPG Key ID: EACC3AD603BAB4DD
1 changed files with 14 additions and 2 deletions
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16
Core/StackGuard.cpp
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@ -8,10 +8,22 @@
EXTERNC __attribute__((weak, no_stack_protector)) uintptr_t __stack_chk_guard_init(void) EXTERNC __attribute__((weak, no_stack_protector)) uintptr_t __stack_chk_guard_init(void)
{ {
int MaxRetries = 0;
#if UINTPTR_MAX == UINT32_MAX #if UINTPTR_MAX == UINT32_MAX
return Random::rand32(); uint32_t num;
Retry:
num = Random::rand32();
if (num < 0x1000 && MaxRetries++ < 10)
goto Retry;
return num;
#else #else
return Random::rand64(); uint64_t num;
Retry:
num = Random::rand64();
if (num < 0x100000 && MaxRetries++ < 10)
goto Retry;
return num;
#endif #endif
} }