A specially-crafted file can cause libjxl's decoder to read pixel data from uninitialized (but allocated) memory.
This can be done by causing the decoder to reference an outside-image-bound area in a subsequent patches. An incorrect optimization causes the decoder to omit populating those areas.
{
"cna_assigner": "Google",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12474.json",
"cwe_ids": [
"CWE-908"
]
}