diff --git a/mlir/include/mlir/AsmParser/AsmParser.h b/mlir/include/mlir/AsmParser/AsmParser.h
--- a/mlir/include/mlir/AsmParser/AsmParser.h
+++ b/mlir/include/mlir/AsmParser/AsmParser.h
@@ -49,16 +49,27 @@
 /// If `numRead` is provided, it is set to the number of consumed characters on
 /// succesful parse. Otherwise, parsing fails if the entire string is not
 /// consumed.
-Attribute parseAttribute(llvm::StringRef attrStr, MLIRContext *context,
-                         Type type = {}, size_t *numRead = nullptr);
+Attribute parseNullTerminatedAttribute(llvm::StringRef attrStr,
+                                       MLIRContext *context, Type type = {},
+                                       size_t *numRead = nullptr);
+inline Attribute parseAttribute(llvm::StringRef attrStr, MLIRContext *context,
+                                Type type = {}, size_t *numRead = nullptr) {
+  // Ensure source is null-terminated by copying to std::string
+  return parseNullTerminatedAttribute(attrStr.str(), context, type, numRead);
+}
 
 /// This parses a single MLIR type to an MLIR context if it was valid. If not,
 /// an error diagnostic is emitted to the context.
 /// If `numRead` is provided, it is set to the number of consumed characters on
 /// succesful parse. Otherwise, parsing fails if the entire string is not
 /// consumed.
-Type parseType(llvm::StringRef typeStr, MLIRContext *context,
-               size_t *numRead = nullptr);
+Type parseNullTerminatedType(llvm::StringRef typeStr, MLIRContext *context,
+                             size_t *numRead = nullptr);
+inline Type parseType(llvm::StringRef typeStr, MLIRContext *context,
+                      size_t *numRead = nullptr) {
+  // Ensure source is null-terminated by copying to std::string
+  return parseNullTerminatedType(typeStr.str(), context, numRead);
+}
 
 /// This parses a single IntegerSet/AffineMap to an MLIR context if it was
 /// valid. If not, an error message is emitted through a new
diff --git a/mlir/lib/AsmParser/DialectSymbolParser.cpp b/mlir/lib/AsmParser/DialectSymbolParser.cpp
--- a/mlir/lib/AsmParser/DialectSymbolParser.cpp
+++ b/mlir/lib/AsmParser/DialectSymbolParser.cpp
@@ -342,13 +342,15 @@
   return symbol;
 }
 
-Attribute mlir::parseAttribute(StringRef attrStr, MLIRContext *context,
-                               Type type, size_t *numRead) {
+Attribute mlir::parseNullTerminatedAttribute(StringRef attrStr,
+                                             MLIRContext *context, Type type,
+                                             size_t *numRead) {
   return parseSymbol<Attribute>(
       attrStr, context, numRead,
       [type](Parser &parser) { return parser.parseAttribute(type); });
 }
-Type mlir::parseType(StringRef typeStr, MLIRContext *context, size_t *numRead) {
+Type mlir::parseNullTerminatedType(StringRef typeStr, MLIRContext *context,
+                                   size_t *numRead) {
   return parseSymbol<Type>(typeStr, context, numRead,
                            [](Parser &parser) { return parser.parseType(); });
 }
diff --git a/mlir/lib/Bytecode/Reader/BytecodeReader.cpp b/mlir/lib/Bytecode/Reader/BytecodeReader.cpp
--- a/mlir/lib/Bytecode/Reader/BytecodeReader.cpp
+++ b/mlir/lib/Bytecode/Reader/BytecodeReader.cpp
@@ -1031,9 +1031,9 @@
   size_t numRead = 0;
   MLIRContext *context = fileLoc->getContext();
   if constexpr (std::is_same_v<T, Type>)
-    result = ::parseType(asmStr, context, &numRead);
+    result = ::parseNullTerminatedType(asmStr, context, &numRead);
   else
-    result = ::parseAttribute(asmStr, context, Type(), &numRead);
+    result = ::parseNullTerminatedAttribute(asmStr, context, Type(), &numRead);
   if (!result)
     return failure();
 
diff --git a/mlir/lib/Dialect/Linalg/TransformOps/LinalgTransformOps.cpp b/mlir/lib/Dialect/Linalg/TransformOps/LinalgTransformOps.cpp
--- a/mlir/lib/Dialect/Linalg/TransformOps/LinalgTransformOps.cpp
+++ b/mlir/lib/Dialect/Linalg/TransformOps/LinalgTransformOps.cpp
@@ -1693,7 +1693,7 @@
     // Try to parse string attributes to obtain an attribute of element type.
     if (auto stringAttr = attr.dyn_cast<StringAttr>()) {
       auto parsedAttr = dyn_cast_if_present<TypedAttr>(
-          parseAttribute(stringAttr, getContext(), elementType));
+          parseNullTerminatedAttribute(stringAttr, getContext(), elementType));
       if (!parsedAttr || parsedAttr.getType() != elementType) {
         auto diag = this->emitOpError("expects a padding that parses to ")
                     << elementType << ", got " << std::get<0>(it);
diff --git a/mlir/tools/mlir-linalg-ods-gen/mlir-linalg-ods-yaml-gen.cpp b/mlir/tools/mlir-linalg-ods-gen/mlir-linalg-ods-yaml-gen.cpp
--- a/mlir/tools/mlir-linalg-ods-gen/mlir-linalg-ods-yaml-gen.cpp
+++ b/mlir/tools/mlir-linalg-ods-gen/mlir-linalg-ods-yaml-gen.cpp
@@ -317,10 +317,8 @@
                          SerializedAffineMap &value) {
     assert(rawYamlContext);
     auto *yamlContext = static_cast<LinalgYAMLContext *>(rawYamlContext);
-    std::string nullTerminatedScalar(scalar);
-    if (auto attr =
-            mlir::parseAttribute(nullTerminatedScalar, yamlContext->mlirContext)
-                .dyn_cast_or_null<AffineMapAttr>())
+    if (auto attr = mlir::parseAttribute(scalar, yamlContext->mlirContext)
+                        .dyn_cast_or_null<AffineMapAttr>())
       value.affineMapAttr = attr;
     else if (!value.affineMapAttr || !value.affineMapAttr.isa<AffineMapAttr>())
       return "could not parse as an affine map attribute";
diff --git a/mlir/unittests/Parser/ParserTest.cpp b/mlir/unittests/Parser/ParserTest.cpp
--- a/mlir/unittests/Parser/ParserTest.cpp
+++ b/mlir/unittests/Parser/ParserTest.cpp
@@ -95,5 +95,10 @@
               b.getI64IntegerAttr(10));
     EXPECT_EQ(numRead, size_t(4)); // includes trailing whitespace
   }
+  { // Parse without null-terminator
+    StringRef attrAsm("999", 1);
+    Attribute attr = parseAttribute(attrAsm, &context);
+    EXPECT_EQ(attr, b.getI64IntegerAttr(9));
+  }
 }
 } // namespace