CVE-2026-92449

`_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

No CVSS.

References

Link	Resource
https://github.com/eclipse-threadx/guix/security/advisories/GHSA-m85v-2ccm-w6gf

Configurations

No configuration.

History

20 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-20 15:17

Updated : 2026-10-20 19:48

NVD link : CVE-2026-92449

Mitre link : CVE-2026-92449

CVE.ORG link : CVE-2026-92449

JSON object : View

Products Affected

No product.

CWE

CWE-129

Improper Validation of Array Index

CWE-457

Use of Uninitialized Variable

CWE-787

Out-of-bounds Write

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