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Yi Zhao

PROFILE

Yi Zhao

Yi Zhao focused on security remediation in the zephyrproject-rtos/poky repository, addressing a critical vulnerability in iputils ping. By implementing a patch in C, Yi validated the tv_sec and tv_usec fields to prevent signed 64-bit integer overflow during round-trip time calculations, directly mitigating CVE-2025-47268. This work reduced the risk of denial-of-service attacks and improved the integrity of RTT monitoring data. Yi’s approach involved patch management, code review, and targeted testing to ensure robust integration. Although no new features were introduced, the depth of the fix demonstrated strong skills in system programming and security vulnerability remediation within complex codebases.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

1Total
Bugs
1
Commits
1
Features
0
Lines of code
147
Activity Months1

Work History

May 2025

1 Commits

May 1, 2025

Month: 2025-05. Focused on security remediation in the Poky repository (zephyrproject-rtos/poky). Delivered a critical patch to iputils ping mitigating CVE-2025-47268 by validating tv_sec and tv_usec to prevent signed 64-bit overflow, preventing potential DoS and ensuring accurate RTT measurements. The change was implemented in commits 57560c118daba7ce29eb541cf2f20da0c97ea55b. No new features were introduced this month; however, the security hardening improves reliability and monitoring data. Impact includes reduced DoS risk, improved RTT data integrity, and alignment with security patching cadence. Technologies used: C, IP networking, security vulnerability remediation, patch management, code review and testing in Poky.

Activity

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Quality Metrics

Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

C

Technical Skills

Patch ManagementSecuritySystem Programming

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

zephyrproject-rtos/poky

May 2025 May 2025
1 Month active

Languages Used

C

Technical Skills

Patch ManagementSecuritySystem Programming

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