{"id":"CVE-2026-110605","published":"2026-10-14T15:17:12.160","lastModified":"2026-10-16T19:18:44.867","description":"libschrift through 0.10.2 contains a divide by zero vulnerability that allows attackers to crash applications by supplying a font with unitsPerEm of 0 in the head table. Attackers can provide a crafted TrueType font whose NaN glyph coordinates bypass clip_points(), causing an out-of-bounds raster read in draw_line() during sft_render() and crashing the process.","cvssScore":5.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwes":["CWE-369"],"vendors":[],"products":[],"references":[{"url":"https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L1422-L1503","tags":[]},{"url":"https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L542","tags":[]},{"url":"https://github.com/tomolt/libschrift/issues/46","tags":[]},{"url":"https://hackmd.io/@haind-pwn/libschrift-unitsperem-zero-oob","tags":[]},{"url":"https://www.vulncheck.com/advisories/libschrift-through-0.10.2-divide-by-zero-via-unitsperem-in-draw-line","tags":[]}],"exploitRefs":[{"url":"https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L1422-L1503","tags":[]},{"url":"https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L542","tags":[]},{"url":"https://github.com/tomolt/libschrift/issues/46","tags":[]}],"hasPoc":true,"ai":null}