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CVE-2026-85046-Patch-confusion-zero-day-vulnerability-in-Google-Chrome-s-V8-engine — Conceptual C++ patch and structural analysis for CVE-2026-85046, a critical type confusion zero-day vulnerability in Google Chrome's V8 engine | Kitploit
Tools/GitHubGitHub/ubitquity/cve-2026-85046-patch-confusion-zero-day-vulnerability-in-google-chrome-s-v8-engine
Vulnerability AnalysisLearning & Education
GitHububitquity/cve-2026-85046-patch-confusion-zero-day-vulnerability-in-google-chrome-s-v8-engine

CVE-2026-85046-Patch-confusion-zero-day-vulnerability-in-Google-Chrome-s-V8-engine

Conceptual C++ patch and structural analysis for CVE-2026-85046, a critical type confusion zero-day vulnerability in Google Chrome's V8 engine

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2420 days agoNot yet reviewed

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CVE-2026-85046: Chrome V8 Type Confusion Patch

This repository contains the conceptual C++ patch for the critical zero-day vulnerability in Google Chrome's V8 JavaScript and WebAssembly engine (CVE-2026-85046).

Overview

The vulnerability is a high-severity type confusion bug in V8's Maglev and Turbofan compilers. It occurs when an array containing generic PACKED_ELEMENTS incorrectly receives a PACKED_SMI_ELEMENTS map, allowing attackers to read/write arbitrary pointers on the JavaScript heap.

Repository Contents

  • v8_type_confusion_fix.cpp: The structural C++ logic demonstrating how map checks are enforced to prevent element confusion.
  • ABOUT.md: Context on the vulnerability, its discovery, and the scope of the repository.
  • README.md: Overview and instructions.

Mitigation & Usage

End users should update Chrome Stable to version 152.0.7977.82/.83 (Windows/macOS) or 152.0.7977.82 (Linux) via Help > About Google Chrome.

This patch is provided for educational and research purposes for browser engine developers investigating the Turbofan/Maglev compilation pipeline.

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