CVE-2025-0313

Description

A flaw was found in Ollama. This vulnerability allows a malicious user to cause a denial of service (DoS) attack via improper validation of array index bounds in the GGUF model handling code, which can be exploited remotely over a network.

Statement

This CVE has been marked as Rejected by the assigning CNA.

No Red Hat products are affected by this vulnerability.

Understanding the Weakness (CWE)

CWE-129

Integrity,Availability

Technical Impact: DoS: Crash, Exit, or Restart

Use of an index that is outside the bounds of an array will very likely result in the corruption of relevant memory and perhaps instructions, leading to a crash, if the values are outside of the valid memory area.

Integrity

Technical Impact: Modify Memory

If the memory corrupted is data, rather than instructions, the system will continue to function with improper values.

Confidentiality,Integrity

Technical Impact: Modify Memory; Read Memory

Use of an index that is outside the bounds of an array can also trigger out-of-bounds read or write operations, or operations on the wrong objects; i.e., "buffer overflows" are not always the result. This may result in the exposure or modification of sensitive data.

Integrity,Confidentiality,Availability

Technical Impact: Execute Unauthorized Code or Commands

If the memory accessible by the attacker can be effectively controlled, it may be possible to execute arbitrary code, as with a standard buffer overflow and possibly without the use of large inputs if a precise index can be controlled.

Integrity,Availability,Confidentiality

Technical Impact: DoS: Crash, Exit, or Restart; Execute Unauthorized Code or Commands; Read Memory; Modify Memory

A single fault could allow either an overflow (CWE-788) or underflow (CWE-786) of the array index. What happens next will depend on the type of operation being performed out of bounds, but can expose sensitive information, cause a system crash, or possibly lead to arbitrary code execution.

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