CVE-2026-34764
Electron: Use-after-free in offscreen shared texture release() callback
描述
### Impact Apps that use offscreen rendering with GPU shared textures may be vulnerable to a use-after-free. Under certain conditions, the `release()` callback provided on a `paint` event texture can outlive its backing native state, and invoking it after that point dereferences freed memory in the main process, which may lead to a crash or memory corruption. Apps are only affected if they use offscreen rendering with `webPreferences.offscreen: { useSharedTexture: true }`. Apps that do not enable shared-texture offscreen rendering are not affected. ### Workarounds Ensure `texture.release()` is called promptly after the texture has been consumed, before the texture object becomes unreachable. ### Fixed Versions * `42.0.0-alpha.5` * `41.1.0` * `40.8.5` * `39.8.5` ### For more information If there are any questions or comments about this advisory, send an email to [[email protected]](mailto:[email protected])
如何修補 CVE-2026-34764
要修補 CVE-2026-34764,請將受影響套件升級到下列已修補版本。
- —升級至 39.8.5 或更新版本
CVE-2026-34764 正在被利用嗎?
低 — EPSS 為 0.0%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 33.0.0-alpha.1, < 39.8.5
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | LOW2.3 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L |