Fixed security failure /w alignment in MemPool::Allocate().

diff --git a/libctru/source/allocator/mem_pool.cpp b/libctru/source/allocator/mem_pool.cpp
index a2c312dea74f45a7d65eb86daed56ccf22d7cdf0..13063ef07347e0305d9cf8f3a970762716b80c94 100644 (file)
--- a/libctru/source/allocator/mem_pool.cpp
+++ b/libctru/source/allocator/mem_pool.cpp
@@ -33,7 +33,11 @@ void MemPool::CoalesceRight(MemBlock* b)
 bool MemPool::Allocate(MemChunk& chunk, u32 size, int align)
 {
        int alignM = (1 << align) - 1;
-       size = (size + alignM) &~ alignM; // Round the size
+       u32 newsize;
+       newsize = (size + alignM) &~ alignM; // Round the size
+       if(newsize < size)return false;//Return error when integer-overflow occurs due to aligning the size.
+       size = newsize;
+
        // Find the first suitable block
        for (auto b = first; b; b = b->next)
        {