fix: mcopy offset oob (#999)

kkrt-labs · Sep 30, 2024 · 1a80ed7 · 1a80ed7
1 parent 9baf1a9
commit 1a80ed7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/crates/evm/src/instructions/memory_operations.cairo b/crates/evm/src/instructions/memory_operations.cairo
@@ -279,7 +279,7 @@ pub impl MemoryOperation of MemoryOperationTrait {
     /// # Specification: https://www.evm.codes/#5e?fork=cancun
     fn exec_mcopy(ref self: VM) -> Result<(), EVMError> {
         let dest_offset = self.stack.pop_saturating_usize()?;
-        let source_offset = self.stack.pop_usize()?;
+        let source_offset = self.stack.pop_saturating_usize()?;
         let size = self.stack.pop_usize()?;
 
         let words_size = bytes_32_words_size(size).into();