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CVE-2026-92449

6.8 medium SSVC exploitation: none Published
NVD · CVE.org

`_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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 6

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-20 15:27
  2. StatusPublished → Awaiting AnalysisNVD modified 2026-10-20 19:48
  3. StatusReceived → PublishedNVD modified 2026-10-20 15:27
  4. StatusPublished → ReceivedNVD modified 2026-10-20 16:17
  5. StatusReceived → PublishedNVD modified 2026-10-20 14:51
  6. First seenCVSS 6.8NVD modified 2026-10-20 15:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1