CVE-2026-92449
CVE-2026-92449 · Binary resource loader: unbounded map_id from a theme file causes a heap out-of-bounds write in the GUIX-allocated arena
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`_gx_binres_pixelmap_table_load()` in the GUIX binary resource (theme) loader indexes the pixelmap table with a value read verbatim from the resource file and never bounds it against the table size. A crafted theme drives a write of up to roughly 256 KB past the end of the table. The overflowed buffer is allocated by GUIX itself, through `_gx_system_memory_allocator`, rather than supplied by the caller, so the loader corrupts its own arena. The public API `gx_binres_theme_load()` takes no size parameter, so no amount of caller diligence prevents this. Reproduces in the shipped default configuration; `GX_BINARY_RESOURCE_SUPPORT` is enabled by default.
CVSS 6.8 · Mittel · EPSS 0,2% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Betroffene Produkte und Versionen
eclipse threadx - guix
- Softwareversionen
- ≥ 6.3.0, ≤ 6.5.1.202602a: Betroffen (semver)
- 6.5.2.202603: Nicht betroffen
Auf 6.5.2.202603 aktualisieren