`gx_binres_theme_load()` sizes its theme buffer for the theme it was asked for, and allocates it even when the resource holds no theme with that id. A theme id at or past the theme count declared by the resource gets a buffer of zero bytes.…

{
                    "vendor": "Eclipse Foundation",
                    "product": "GUIX",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThanOrEqual": "6.5.1.202602a",
                            "versionType": "semver"
                        },
                        {
                            "status": "unaffected",
                            "version": "6.5.2.202603"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }