Update docs

contracts/mocks/ERC1271WalletMock.sol

@@ -15,3 +15,12 @@ contract ERC1271WalletMock is Ownable, IERC1271 {
         return ECDSA.recover(hash, signature) == owner() ? this.isValidSignature.selector : bytes4(0);
     }
 }
+
+contract ERC1271MaliciousMock is IERC1271 {
+    function isValidSignature(bytes32, bytes memory) public pure override returns (bytes4) {
+        assembly {
+            mstore(0, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
+            return(0, 32)
+        }
+    }
+}

contracts/mocks/ERC165/ERC165MaliciousData.sol

@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.0;
+
+contract ERC165MaliciousData {
+    function supportsInterface(bytes4) public view returns (bool) {
+        assembly {
+            mstore(0, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
+            return(0, 32)
+        }
+    }
+}

contracts/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@openzeppelin/contracts",
   "description": "Secure Smart Contract library for Solidity",
-  "version": "4.7.0",
+  "version": "4.7.1",
   "files": [
     "**/*.sol",
     "/build/contracts/*.json",

contracts/utils/cryptography/SignatureChecker.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/SignatureChecker.sol)
+// OpenZeppelin Contracts (last updated v4.7.1) (utils/cryptography/SignatureChecker.sol)
 
 pragma solidity ^0.8.0;
 
@@ -35,6 +35,8 @@ library SignatureChecker {
         (bool success, bytes memory result) = signer.staticcall(
             abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, signature)
         );
-        return (success && result.length == 32 && abi.decode(result, (bytes4)) == IERC1271.isValidSignature.selector);
+        return (success &&
+            result.length == 32 &&
+            abi.decode(result, (bytes32)) == bytes32(IERC1271.isValidSignature.selector));
     }
 }

contracts/utils/introspection/ERC165Checker.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165Checker.sol)
+// OpenZeppelin Contracts (last updated v4.7.1) (utils/introspection/ERC165Checker.sol)
 
 pragma solidity ^0.8.0;
 
@@ -108,6 +108,6 @@ library ERC165Checker {
         bytes memory encodedParams = abi.encodeWithSelector(IERC165.supportsInterface.selector, interfaceId);
         (bool success, bytes memory result) = account.staticcall{gas: 30000}(encodedParams);
         if (result.length < 32) return false;
-        return success && abi.decode(result, (bool));
+        return success && abi.decode(result, (uint256)) > 0;
     }
 }