| Name | CVE-2025-27363 |
| Description | An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and variable font files. The vulnerable code assigns a signed short value to an unsigned long and then adds a static value causing it to wrap around and allocate too small of a heap buffer. The code then writes up to 6 signed long integers out of bounds relative to this buffer. This may result in arbitrary code execution. This vulnerability may have been exploited in the wild. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4104-1, DSA-5880-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| freetype (PTS) | bullseye | 2.10.4+dfsg-1+deb11u1 | vulnerable |
| bullseye (security) | 2.10.4+dfsg-1+deb11u2 | fixed | |
| bookworm | 2.12.1+dfsg-5+deb12u3 | vulnerable | |
| bookworm (security) | 2.12.1+dfsg-5+deb12u4 | fixed | |
| sid, trixie | 2.13.3+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| freetype | source | bullseye | 2.10.4+dfsg-1+deb11u2 | DLA-4104-1 | ||
| freetype | source | bookworm | 2.12.1+dfsg-5+deb12u4 | DSA-5880-1 | ||
| freetype | source | (unstable) | 2.13.1+dfsg-1 |
https://www.facebook.com/security/advisories/cve-2025-27363
https://gitlab.freedesktop.org/freetype/freetype/-/issues/1322
Requisite (macro fixup for FT_Q(RE)NEW_ARRAY): https://gitlab.freedesktop.org/freetype/freetype/-/commit/c71eb22dde1a3101891a865fdac20a6de814267d (VER-2-11-1)
Fixed by: https://gitlab.freedesktop.org/freetype/freetype/-/commit/ef636696524b081f1b8819eb0c6a0b932d35757d (VER-2-13-1)
Followup: https://gitlab.freedesktop.org/freetype/freetype/-/commit/73720c7c9958e87b3d134a7574d1720ad2d24442 (VER-2-13-3)