REDHAT-BUG-2454995: Use After Free
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not set a permission request handler, or whose handler responds synchronously, are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Electronto a version that resolves this vulnerability.Fixed in 38.8.6 - Upgrade
Upgrade
Electronto a version that resolves this vulnerability.Fixed in 39.8.0 - Upgrade
Upgrade
Electronto a version that resolves this vulnerability.Fixed in 40.7.0 - Upgrade
Upgrade
Electronto a version that resolves this vulnerability.Fixed in 41.0.0-beta.8
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2454995?
The severity of REDHAT-BUG-2454995 is high, rated at 7.
What type of vulnerability is REDHAT-BUG-2454995?
REDHAT-BUG-2454995 is a use-after-free vulnerability.
How do I fix REDHAT-BUG-2454995?
To fix REDHAT-BUG-2454995, update to Electron versions 38.8.6, 39.8.0, 40.7.0, or 41.0.0-beta.8.
What applications are affected by REDHAT-BUG-2454995?
Applications built with Electron that use asynchronous session.setPermissionRequestHandler() are affected by REDHAT-BUG-2454995.
What can happen if REDHAT-BUG-2454995 is exploited?
If exploited, REDHAT-BUG-2454995 may lead to unexpected behavior or crashes in applications.