PT-2026-62412 · Ollama · Ollama

George Chen · CVE-2026-65315 · Published 2026-07-21 · Updated 2026-07-21

NVD

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Fix

Weakness Enumeration

CWE-789

Related Identifiers

CVE-2026-65315

Affected Products

Ollama

References · 4

• https://github.com/ollama/ollama · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-65315 · Security Note
• https://github.com/ollama/ollama/issues/17042 · Note
• https://vulncheck.com/advisories/ollama-remote-denial-of-service-via-attacker-controlled-allocation-in-gguf-metadata-parser · Note