CVE-2026-92446: medium-severity vulnerability in Eclipse ThreadX - GUIX
GUIX binary resource loader reads past the end of a resource, because no length for it ever reaches the loader
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.8epss 0.2%
`gx_binres_theme_load()` and `gx_binres_font_load()` take the resource as a bare `GX_UBYTE *` with no length, and `GX_BINRES_DATA_INFO` has no field to carry one. Every read is therefore performed at an offset the file itself chose, against a buffer whose extent the loader does not know. A resource that declares more data than it contains is read past its end, and an offset stored in the file is turned into a pointer without being bounded.
This is a distinct defect from GHSA-hgcj-22cg-4hfv, which was an underflowed glyph count. It needs no underflow and no wrapped multiply: a perfectly well-formed, narrow glyph range reaches it.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
Eclipse Foundation · Eclipse ThreadX - GUIXRelated CVEs — Eclipse ThreadX - GUIX
In the same product, most dangerous first.
CVE-2026-91057MEDIUMOut-of-bounds read when a multi-line text view string ends with a carriage returnEPSS 0.2%CVE-2026-91059MEDIUMJPEG decoder: a duplicate SOF0 after SOS publishes a pixelmap that misreports its own allocation sizeEPSS 0.2%CVE-2026-92449MEDIUMBinary resource loader: unbounded map_id from a theme file causes a heap out-of-bounds write in the GUIX-allocated arenaEPSS 0.2%CVE-2026-91186HIGHPNG decoder: a duplicate IHDR chunk after IDAT resizes the image after allocation, causing a heap out-of-bounds writeEPSS 0.2%CVE-2026-92454MEDIUMJPEG decoder: truncated segments are read past the image buffer, and a zero sampling factor hangs the decodeEPSS 0.2%CVE-2026-91189HIGHGUIX binary resource loader: unvalidated glyph range causes an integer underflow and a heap out-of-bounds write when loading an untrusted font or themeEPSS 0.1%