CVE-2026-112107
MediumCVSS 6.3Summary
In fastllm up to 1.8.2, the SafeTensorItem::CreateBuffer function in src/model.cpp mishandles the data_offsets argument, causing a buffer overflow. The attack can be initiated remotely and the exploit is publicly available.
Risk Assessment
A malicious Safetensors file could trigger a buffer overflow leading to a crash or code execution. The project has not responded, so a fix may not be available.
Recommendation
Do not load untrusted Safetensors files until a fix is released. Monitor the fastllm repository and apply the update as soon as it becomes available.
Other vulnerabilities in fastllm
Original NVD description (English source)
A flaw has been found in ztxz16 fastllm up to 1.8.2. Affected by this issue is the function SafeTensorItem::CreateBuffer of the file src/model.cpp of the component Safetensors Weight Loading. This manipulation of the argument data_offsets causes buffer overflow. The attack can be initiated remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS