Vulnerability Description
Ollama (HEAD f0078ae) contains an uncontrolled memory allocation vulnerability in the GGUF metadata parser that allows remote attackers to crash the server by supplying a crafted GGUF file with attacker-controlled length and count fields in string lengths, tensor dimension counts, and metadata array counts that are used as allocation sizes without validation against remaining file size. Attackers can upload a sub-1KB crafted GGUF file via the blob upload and model create or pull API endpoints to trigger unrecoverable Go runtime out-of-memory fatal errors or makeslice panics that bypass recovery middleware and crash the entire server process.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/ollama/ollama
- https://github.com/ollama/ollama/issues/17042
- https://www.vulncheck.com/advisories/ollama-remote-denial-of-service-via-attacke
FAQ
What is CVE-2026-65315?
CVE-2026-65315 is a vulnerability with a CVSS score of 7.5 (HIGH). Ollama (HEAD f0078ae) contains an uncontrolled memory allocation vulnerability in the GGUF metadata parser that allows remote attackers to crash the server by supplying a crafted GGUF file with attack...
How severe is CVE-2026-65315?
CVE-2026-65315 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-65315?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.