CVE-2026-92449

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Source
https://cve.org/CVERecord?id=CVE-2026-92449
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92449.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-92449
Aliases
  • GHSA-m85v-2ccm-w6gf
Published
2026-10-20T14:51:24Z
Modified
2026-10-21T03:00:13Z
Severity
  • 6.8 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
Binary resource loader: unbounded map_id from a theme file causes a heap out-of-bounds write in the GUIX-allocated arena
Details

_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.

Database specific 
{
    "cna_assigner":  "eclipse",
    "cwe_ids":  [
        "CWE-129",
        "CWE-457",
        "CWE-787"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92449.json"
}
References

Affected packages

Git / github.com/eclipse-threadx/guix

Affected ranges

Type
GIT
Repo
https://github.com/eclipse-threadx/guix
Events
Introduced
354445beacb6f69042c4721cae98d24fbb8651d4
Last Affected
52c1bb406843eb556d26dc28c65b13434f64e0ef
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "6.3.0"
                },
                {
                    "last_affected":  "6.5.1.202602a"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        }
    ]
}

Affected versions

v6.*
v6.3.0_rel
v6.4.0_rel
v6.4.1_rel
v6.4.2_rel
v6.4.3.202503_rel
v6.4.5.202504_rel
v6.5.1.202602_rel
v6.5.1.202602a_rel

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92449.json"