{"id":"CVE-2026-110605","aliases":["EUVD-2026-101233","GHSA-h8w2-cf8p-7p38"],"status":"published","title":"libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line","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.","severity":{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00278,"percentile":0.20416,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-369"],"published":"2026-10-14T14:16:45Z","modified":"2026-10-28T02:31:08Z","products":[{"vendor":"tomolt","product":"libschrift"}],"references":[{"url":"https://github.com/tomolt/libschrift/issues/46","tags":["issue-tracking","exploit","report"]},{"url":"https://hackmd.io/@haind-pwn/libschrift-unitsperem-zero-oob","tags":["third-party-advisory","exploit","advisory"]},{"url":"https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L542","tags":["technical-description","article"]},{"url":"https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L1422-L1503","tags":["technical-description","article"]},{"url":"https://www.vulncheck.com/advisories/libschrift-through-0.10.2-divide-by-zero-via-unitsperem-in-draw-line","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110605","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-h8w2-cf8p-7p38"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110605.json","tags":["advisory"]},{"url":"https://github.com/tomolt/libschrift","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-110605","title":"libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line","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.","status":"published","published":"2026-10-14T14:16:45.714Z","modified":"2026-10-26T16:17:20.314Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T13:34:26.24368Z"}],"euvd":[{"id":"EUVD-2026-101233","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.","status":"published","published":"2026-10-14T14:16:45Z","modified":"2026-10-26T16:17:20Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:59:29.132426Z"}],"ghsa":[{"id":"GHSA-h8w2-cf8p-7p38","title":"libschrift through 0.10.2 contains a divide by zero vulnerability that allows attackers to crash...","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.","status":"published","published":"2026-10-14T15:32:24Z","modified":"2026-10-14T15:32:31Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T15:13:26.117603Z"}],"nvd":[{"id":"CVE-2026-110605","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.","status":"published","published":"2026-10-14T15:17:12.16Z","modified":"2026-10-26T17:17:14.607Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T14:12:58.99337Z"}],"osv":[{"id":"CVE-2026-110605","title":"libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line","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.","status":"published","published":"2026-10-14T14:16:45.714Z","modified":"2026-10-28T02:31:08.976365577Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T15:44:55.61515Z"}]}}