[core] Avoid Polynomial regex backtracking (#46732)

Author: oliviertassinari

packages/mui-material-nextjs/src/v13-pagesRouter/createCache.ts

@@ -23,8 +23,8 @@ export default function createEmotionCache(
   if (enableCssLayer) {
     const prevInsert = emotionCache.insert;
     emotionCache.insert = (...args) => {
-      // ignore styles that contain layer order (`@layer ...` without `{`)
-      if (!args[1].styles.match(/^@layer\s+[^{]*$/)) {
+      // ignore styles that contain layer order (`@layer a, b, c;` without `{`)
+      if (!args[1].styles.match(/^@layer\s+(?:[^{]*?)$/)) {
         args[1].styles = `@layer mui {${args[1].styles}}`;
       }
       return prevInsert(...args);

packages/mui-system/src/InitColorSchemeScript/InitColorSchemeScript.tsx

@@ -75,7 +75,7 @@ export default function InitColorSchemeScript(options?: InitColorSchemeScriptPro
     setter += `${colorSchemeNode}.classList.remove('${selector}'.replace('%s', light), '${selector}'.replace('%s', dark));
       ${colorSchemeNode}.classList.add('${selector}'.replace('%s', colorScheme));`;
   }
-  const matches = attribute.match(/\[([^\]]+)\]/); // case [data-color-scheme='%s'] or [data-color-scheme]
+  const matches = attribute.match(/\[([^[\]]+)\]/); // case [data-color-scheme='%s'] or [data-color-scheme]
   if (matches) {
     const [attr, value] = matches[1].split('=');
     if (!value) {