{"id":"DEBIAN-CVE-2026-58496","details":"Thor Vector Graphics (ThorVG) is a production-ready vector graphics engine. Prior to 1.0.7, the `SFNT/TTF` font loader's `SfntLoader::gen` function in `tvgSfntLoader.cpp` reads `data[0] through data[3]` to identify the font type without first checking that the input buffer contains at least four bytes. Loading an undersized font directly from memory through public APIs such as `tvg::Text::load` causes an out-of-bounds read. Loading through a file path using `mmap` can mask the read because of page alignment; the memory-loading API directly exposes it. Depending on memory layout, a malformed short font may crash the consuming application or disclose adjacent heap memory. This issue is fixed in version 1.0.7.","modified":"2026-10-29T09:47:42.677213361Z","published":"2026-10-27T23:17:06.420Z","upstream":["CVE-2026-58496"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-58496"}],"affected":[{"package":{"name":"thorvg","ecosystem":"Debian:14","purl":"pkg:deb/debian/thorvg?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.2+dfsg-1","1.0.3+dfsg-1","1.0.3+dfsg-2","1.0.3+dfsg-3","1.0.3+dfsg2-1","1.0.3+dfsg2-2","1.0.3+dfsg2-3","1.0.3+dfsg2-4","1.0.6+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-58496.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"}]}