{"id":"CVE-2026-92449","revision":"0178a901b6e7463b8b08b1c6498c507f","records":[{"revision":"0178a901b6e7463b8b08b1c6498c507f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-92449","aliases":[],"title":"Binary resource loader: unbounded map_id from a theme file causes a heap out-of-bounds write in the GUIX-allocated arena","description":"`_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.\n\n\n\nThe 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.\n\n\n\nReproduces in the shipped default configuration; `GX_BINARY_RESOURCE_SUPPORT` is enabled by default.","state":0,"publishedAt":"2026-10-20T14:51:24.582+00:00","modifiedAt":"2026-10-20T15:27:55.848+00:00","affected":[{"ecosystem":"Vendor product","name":"GUIX","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Eclipse Foundation\",\n                    \"product\": \"Eclipse ThreadX - GUIX\",\n                    \"packageName\": \"GUIX\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"6.3.0\",\n                            \"lessThanOrEqual\": \"6.5.1.202602a\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"6.5.2.202603\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","score":6.8,"severity":"MEDIUM"}],"references":["https://github.com/eclipse-threadx/guix/security/advisories/GHSA-m85v-2ccm-w6gf"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92449","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-92449","identifiers":["CVE-2026-92449"]},"retained":false,"historicalAffected":[]}],"coverage":[]}