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1 vulnerability found for Ollama by Ollama
CVE-2025-15514 (GCVE-0-2025-15514)
Vulnerability from cvelistv5
Published
2026-01-12 23:03
Modified
2026-03-05 01:29
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-395 - Use of NullPointerException Catch to Detect NULL Pointer Dereference
Summary
Ollama 0.11.5-rc0 through current version 0.13.5 contain a null pointer dereference vulnerability in the multi-modal model image processing functionality. When processing base64-encoded image data via the /api/chat endpoint, the application fails to validate that the decoded data represents valid media before passing it to the mtmd_helper_bitmap_init_from_buf function. This function can return NULL for malformed input, but the code does not check this return value before dereferencing the pointer in subsequent operations. A remote attacker can exploit this by sending specially crafted base64 image data that decodes to invalid media, causing a segmentation fault and crashing the runner process. This results in a denial of service condition where the model becomes unavailable to all users until the service is restarted.
References
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