An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value).
{
"license": "CC-BY-4.0",
"sources": [
{
"html_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-29469",
"imported": "2025-10-28T18:09:09.633Z",
"id": "CVE-2023-29469",
"modified": "2025-02-04T21:15:23.447Z",
"url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2023-29469",
"published": "2023-04-24T21:15:09.230Z"
}
]
}