CVE-2026-6210— Qt SVG 安全漏洞

Type confusion and heap-buffer-overflow in Qt SVG marker handling causing application crash

A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image. When processing SVG marker references, the renderer retrieves a node by its id attribute and casts it to QSvgMarker* without verifying the node type. A non-marker element (such as a <line> element) that references itself as a marker triggers an out-of-bounds heap read due to the object size difference between QSvgLine and QSvgMarker, followed by an endless recursion that bypasses the marker recursion guard through incorrect virtual dispatch. The result is an application crash (denial of service). This issue affects Qt SVG:  from 6.7.0 before 6.8.8, from 6.9.0 before 6.11.1.

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使用不兼容类型访问资源(类型混淆)

Qt SVG 安全漏洞

Qt SVG是Qt公司的一个图形处理模块。 Qt SVG 6.7.0至6.8.8之前版本和6.9.0至6.11.1之前版本存在安全漏洞，该漏洞源于处理SVG标记引用时存在类型混淆，可能导致应用程序崩溃。

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