LLM-Powered Code Vulnerability Repair with Reinforcement Learning and Semantic Reward

• URL: http://arxiv.org/abs/2401.03374v2
• Date: Thu, 22 Feb 2024 00:29:37 GMT
• Title: LLM-Powered Code Vulnerability Repair with Reinforcement Learning and Semantic Reward
• Authors: Nafis Tanveer Islam, Joseph Khoury, Andrew Seong, Mohammad Bahrami Karkevandi, Gonzalo De La Torre Parra, Elias Bou-Harb, Peyman Najafirad
• Abstract summary: We introduce a multipurpose code vulnerability analysis system textttSecRepair, powered by a large language model, CodeGen2. Inspired by how humans fix code issues, we propose an instruction-based dataset suitable for vulnerability analysis with LLMs. We identify zero-day and N-day vulnerabilities in 6 Open Source IoT Operating Systems on GitHub.
• Score: 3.729516018513228
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: In software development, the predominant emphasis on functionality often supersedes security concerns, a trend gaining momentum with AI-driven automation tools like GitHub Copilot. These tools significantly improve developers' efficiency in functional code development. Nevertheless, it remains a notable concern that such tools are also responsible for creating insecure code, predominantly because of pre-training on publicly available repositories with vulnerable code. Moreover, developers are called the "weakest link in the chain" since they have very minimal knowledge of code security. Although existing solutions provide a reasonable solution to vulnerable code, they must adequately describe and educate the developers on code security to ensure that the security issues are not repeated. Therefore we introduce a multipurpose code vulnerability analysis system \texttt{SecRepair}, powered by a large language model, CodeGen2 assisting the developer in identifying and generating fixed code along with a complete description of the vulnerability with a code comment. Our innovative methodology uses a reinforcement learning paradigm to generate code comments augmented by a semantic reward mechanism. Inspired by how humans fix code issues, we propose an instruction-based dataset suitable for vulnerability analysis with LLMs. We further identify zero-day and N-day vulnerabilities in 6 Open Source IoT Operating Systems on GitHub. Our findings underscore that incorporating reinforcement learning coupled with semantic reward augments our model's performance, thereby fortifying its capacity to address code vulnerabilities with improved efficacy.

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