【中文导读】该 CVE 涉及内存破坏、释放后使用（高危风险）。具体受影响产品、版本和修复方案以 NVD/厂商公告为准。 【原始描述】Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.