Electron: Off-screen rendering trusts GPU-supplied geometry over shared-memory size

低 3.9CVE-2026-70598 · GHSA-pfmc-3mgc-p6fp · 05/08/2026 公開 · 08/10/2026 更新

要点

CVE-2026-70598 は electron (electronjs), electron に影響する深刻度「低」 (CVSS 3.9) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.14%（全脆弱性の 3.1% より高い）。
対処：40.9.0, 41.2.1, 39.8.10, 42.0.0-beta.3 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
electron electronjs	`= 42.0.0≥ 40.0.0, < 40.9.0≥ 41.0.0, < 41.2.1< 39.8.10`	`40.9.041.2.139.8.10`
electron npm	`≥ 40.0.0-alpha.1, < 40.9.0≥ 41.0.0-alpha.1, < 41.2.1≥ 42.0.0-alpha.1, < 42.0.0-beta.3< 39.8.10`	`40.9.041.2.142.0.0-beta.339.8.10`

概要

Impact

In offscreen rendering mode, frame data received from the GPU process was not fully validated by the main process. A compromised GPU process could cause the main process to read out-of-bounds memory while producing paint event images, disclosing memory or crashing the app.

Apps are only affected if they use offscreen rendering (webPreferences.offscreen) and an attacker has separately gained code execution in the GPU process. Apps that do not use offscreen rendering are not affected.

Workarounds

There are no app side workarounds, you must update to a patched version of Electron.

Fixed Versions

42.0.0-beta.3
41.2.1
40.9.0
39.8.10

For more information

If you have any questions or comments about this advisory, email us at [email protected]

NVD の説明

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.0, 41.2.1, and 42.0.0-beta.3, offscreen rendering frame data received from the GPU process was not fully validated by the main process. A compromised GPU process could cause the main process to read out-of-bounds memory while producing paint event images, disclosing memory or crashing the app. This issue is fixed in 39.8.10, 40.9.0, 41.2.1, and 42.0.0-beta.3.