CVE-2026-110605

Açıklama (NVD)

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.

Yayın: 14.10.2026 · Son değişiklik: 26.10.2026 · Zayıflık: CWE-369

CVSS

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

Referanslar

• https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L1422-L1503
• https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L542
• https://github.com/tomolt/libschrift/issues/46
• https://hackmd.io/@haind-pwn/libschrift-unitsperem-zero-oob
• https://www.vulncheck.com/advisories/libschrift-through-0.10.2-divide-by-zero-via-unitsperem-in-draw-line