{"id":"CVE-2026-92446","summary":"GUIX binary resource loader reads past the end of a resource, because no length for it ever reaches the loader","details":"`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.\n\n\n\nThis 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.","aliases":["GHSA-m779-jvp3-pmqr"],"modified":"2026-10-21T03:00:13.958387236Z","published":"2026-10-20T14:52:45.765Z","database_specific":{"cwe_ids":["CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92446.json","cna_assigner":"eclipse"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92446.json"},{"type":"ADVISORY","url":"https://github.com/eclipse-threadx/guix/security/advisories/GHSA-m779-jvp3-pmqr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92446"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/eclipse-threadx/guix","events":[{"introduced":"0"},{"last_affected":"52c1bb406843eb556d26dc28c65b13434f64e0ef"}],"database_specific":{"extracted_events":[{"strategy":"StandardRange","range":[{"introduced":"0"},{"last_affected":"6.5.1.202602a"}],"source":"AFFECTED_FIELD"}]}}],"versions":["v6.4.1_rel","v6.5.1.202602a_rel","v6.5.1.202602_rel","v6.4.5.202504_rel","v6.4.3.202503_rel","v6.4.2_rel","v6.4.0_rel","v6.3.0_rel","v6.2.1_rel","v6.2.0_rel","v6.1.12_rel","v6.1.11_rel","v6.1.10_rel","v6.1.9_rel","v6.1.8_rel","v6.1.7_rel","v6.1.6_rel","v6.1.5_rel","v6.1.4_rel","v6.1.3_rel","v6.1_rel","v6.0.2_rel","v6.0.1_rel","v6.0_rel"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92446.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}