Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 42.11.6, 43.7.3, 44.4.3, and 45.0.0-alpha.9, frame data received from the GPU process for macOS offscreen rendering was not fully validated by the main process. An attacker who had separately gained code execution in the GPU process could provide inconsistent frame geometry and cause the main process to read out-of-bounds memory while producing paint event images, disclosing memory or crashing the application. This issue is fixed in versions 42.11.6, 43.7.3, 44.4.3, and 45.0.0-alpha.9.
https://github.com/electron/electron/security/advisories/GHSA-h3v5-h239-pg29
https://github.com/electron/electron/releases/tag/v45.0.0-alpha.9
https://github.com/electron/electron/releases/tag/v44.4.3
https://github.com/electron/electron/releases/tag/v43.7.3
https://github.com/electron/electron/releases/tag/v42.11.6
https://github.com/electron/electron/pull/54047
https://github.com/electron/electron/pull/54038
https://github.com/electron/electron/pull/54037
https://github.com/electron/electron/pull/54036
https://github.com/electron/electron/pull/54033
https://github.com/electron/electron/commit/d7f87070a8d738e561245d1ade4d6fbb082db80a
https://github.com/electron/electron/commit/d496507ffa1693edaa704a4be130fbcb8ecb4ada
https://github.com/electron/electron/commit/8d48be150c3fd53b0d02854124bdb7858598799c
https://github.com/electron/electron/commit/64ae597deda8956037387b439e6361f0fe936c86
https://github.com/electron/electron/commit/24d8dbc661c6a109476ae59e9a2740b35d005cf4