GHSA-532v-xpq5-8h95
Electron: Use-after-free in offscreen child window paint callback
Quick fix
GHSA-532v-xpq5-8h95 — electron: upgrade to the fixed version with the command below.
npm install electron@39.8.1Details
### Impact Apps that use offscreen rendering and allow child windows via `window.open()` may be vulnerable to a use-after-free. If the parent offscreen `WebContents` is destroyed while a child window remains open, subsequent paint frames on the child dereference freed memory, which may lead to a crash or memory corruption.
Apps are only affected if they use offscreen rendering (`webPreferences.offscreen: true`) and their `setWindowOpenHandler` permits child windows. Apps that do not use offscreen rendering, or that deny child windows, are not affected.
### Workarounds Deny child window creation from offscreen renderers in your `setWindowOpenHandler`, or ensure child windows are closed before the parent is destroyed.
### Fixed Versions * `41.0.0` * `40.7.0` * `39.8.1`
### For more information If there are any questions or comments about this advisory, please email [security@electronjs.org](mailto:security@electronjs.org)
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