CVE-2025-48754: Fractalfir Memory Pages DOS Vulnerability

CVE-2025-48754 Overview

CVE-2025-48754 is a division by zero vulnerability affecting the memory_pages crate version 0.1.0 for Rust. This vulnerability allows a remote attacker to trigger a denial of service condition by causing the application to crash through an unhandled division by zero operation. The vulnerability exists in the memory page management functionality and can be exploited over the network without requiring authentication or user interaction.

Critical Impact

Applications using the vulnerable memory_pages crate can be crashed remotely, leading to denial of service. This is particularly concerning for services that rely on this crate for memory management operations in production environments.

Affected Products

• fractalfir memory_pages version 0.1.0
• Rust applications depending on memory_pages:0.1.0
• Systems using the memory_pages crate for memory page allocation

Discovery Timeline

• 2025-05-24 - CVE-2025-48754 published to NVD
• 2026-01-30 - Last updated in NVD database

Technical Details for CVE-2025-48754

Vulnerability Analysis

This vulnerability is classified under CWE-369 (Divide By Zero), which occurs when an application performs a division operation where the divisor can be zero. In the context of the memory_pages crate, the division by zero condition arises during memory page calculations where input validation is insufficient.

The memory_pages crate is designed to provide memory page management functionality for Rust applications. When processing certain inputs related to memory page calculations, the code fails to validate that divisor values are non-zero before performing division operations. This results in a panic condition in Rust, causing the application to terminate unexpectedly.

The vulnerability is exploitable over the network without requiring privileges or user interaction, making it accessible to unauthenticated remote attackers. While the vulnerability does not allow for data confidentiality or integrity breaches, it can effectively render affected services unavailable.

Root Cause

The root cause of this vulnerability is the absence of proper input validation before performing arithmetic division operations within the memory_pages crate. Specifically, the code does not check whether the divisor value is zero before executing the division, which leads to a panic when a zero value is encountered. In Rust, integer division by zero causes a panic by default, which terminates the program unless explicitly caught.

Attack Vector

The attack vector is network-based, allowing remote exploitation. An attacker can craft malicious input that results in a zero divisor being passed to the vulnerable division operation. Since no authentication or user interaction is required, the attack can be executed with minimal complexity.

The exploitation flow involves:

1. Identifying an application using the vulnerable memory_pages crate
2. Sending specially crafted input that triggers the division operation with a zero divisor
3. The application panics and crashes, causing denial of service

The vulnerability mechanism involves improper handling of edge cases in arithmetic operations. When memory page calculations are performed with certain boundary values or malformed inputs, the divisor can become zero. For detailed technical analysis, refer to the GitHub Issue Discussion which documents the specific conditions that trigger this vulnerability.

Detection Methods for CVE-2025-48754

Indicators of Compromise

• Application crashes with panic messages indicating "attempt to divide by zero" or similar arithmetic errors
• Rust panic backtraces pointing to memory_pages crate functions
• Unexpected service terminations in applications using the memory_pages dependency
• Increased restart attempts for services utilizing memory page management functionality

Detection Strategies

• Monitor application logs for Rust panic messages containing division by zero errors
• Implement dependency scanning to identify applications using memory_pages version 0.1.0
• Use cargo audit or similar tools to check for vulnerable dependencies in Rust projects
• Deploy application-level monitoring to detect abnormal crash patterns

Monitoring Recommendations

• Configure alerting for repeated application crashes or restarts
• Implement centralized logging to capture panic messages across all services
• Set up dependency vulnerability tracking using tools like cargo-deny or Dependabot
• Monitor service availability metrics to detect potential DoS conditions early

How to Mitigate CVE-2025-48754

Immediate Actions Required

• Audit all Rust projects to identify usage of memory_pages version 0.1.0
• Review the GitHub Issue Discussion for specific remediation guidance
• Consider removing or replacing the memory_pages dependency if updates are not available
• Implement input validation in application code that interfaces with the vulnerable crate

Patch Information

Check the Crates.io Memory Pages Package for updated versions that address this vulnerability. Review the project's GitHub repository for patches or commits that resolve the division by zero condition. If no patched version is available, consider alternative memory management solutions or implement wrapper functions with proper input validation.

Workarounds

• Implement input validation in calling code to ensure non-zero values before invoking memory page operations
• Use Rust's checked_div() method in wrapper functions to handle potential division by zero gracefully
• Consider forking the crate and applying manual fixes if upstream patches are unavailable
• Deploy rate limiting and input sanitization at the network boundary to reduce attack surface

# Check for vulnerable dependency in Rust projects
cargo tree -i memory_pages

# Audit dependencies for known vulnerabilities
cargo audit

# Update Cargo.toml to exclude vulnerable version (if patched version available)
# memory_pages = ">0.1.0"