Ollama GGUF Decoder gguf.go readGGUFV1String integer overflow
Published Sep 7, 2026 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
Ollama GGUF Decoder gguf.go readGGUFV1String integer overflow
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
A vulnerability was found in Ollama up to 0.31.1. This issue affects the function readGGUFV1String of the file fs/ggml/gguf.go of the component GGUF Decoder. Performing a manipulation results in integer overflow. The attack is possible to be carried out remotely. The exploit has been made public and could be used. Upgrading to version 0.31.2-rc1 is capable of addressing this issue. The patch is named 67b6a1c2d45321e0cb3c04a18073f9818de7724b. It is recommended to upgrade the affected component.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- VDB-399448 | Ollama GGUF Decoder gguf.go readGGUFV1String integer overflow ↗
- VDB-399448 | CTI Indicators (IOB, IOC, IOA) ↗
- CVE-2026-86289 | CVE Analysis and Report ↗
- Submit #906136 | Ollama <= 0.17.1 Integer Overflow ↗
- Source repository ↗
- Source repository ↗
- Patch commit ↗
- Source repository ↗
- Source repository ↗
Record history
Published Sep 7, 2026 · Last refreshed Nov 3, 2026