Tract is a tiny, no-nonsense, self-contained TensorFlow and ONNX inference toolkit. Prior to 0.21.16, 0.22.2, and 0.23.1, tract-nnef uses unchecked usize multiplication in nnef/src/tensors.rs read_tensor for attacker-controlled tensor dimensions, the allocation size, and the reported tensor length. Loading a crafted NNEF archive through model_for_path or model_for_read reaches the default DatLoader and can make the wrapped size check accept a small allocation while data/src/tensor.rs as_slice_unchecked creates a much larger logical slice. Model construction through as_uniform can then read beyond the heap allocation and disclose adjacent data, and later access can terminate the process with a segmentation fault. The affected dense numeric tensor path does not include the independently guarded bool, String, or block-quant paths, and no out-of-bounds write or code execution was demonstrated. This issue is fixed in versions 0.21.16, 0.22.2, and 0.23.1.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-125",
"CWE-190"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55093.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "0.21.16"
},
{
"introduced": "0.22.0"
},
{
"fixed": "0.22.2"
},
{
"introduced": "0.23.0"
},
{
"fixed": "0.23.1"
}
],
"source": [
"AFFECTED_FIELD",
"REFERENCES"
]
}