● Stable Channel Update · V8 Engine

Google Chrome Security Advisory: V8 JIT & WebRTC Zero-Day Triage

Technical breakdown of Chrome's emergency stable channel update resolving actively exploited JIT compiler type confusion vulnerabilities.

1
Active Zero-Day (V8)
8.8
CVSS Severity
Critical
Browser Exploitation
Immediate
Fleet Patch Urgency

Executive Triage & Risk Verdict

Google has released an emergency security update for Chrome across Windows, Mac, and Linux to patch CVE-2024-4947, an actively exploited type confusion vulnerability in the V8 JavaScript engine. This flaw allows malicious web pages to escape the V8 sandbox and execute arbitrary code in the browser renderer process.

Curated Vulnerability Triage Matrix

CVE Identifier Subsystem / Component Impact CVSS In-The-Wild Exploitation?
CVE-2024-4947V8 JavaScript EngineJIT Type Confusion8.8 HighYES (In-The-Wild)
CVE-2024-4948Dawn / WebGPUUse-After-Free8.1 HighNo
CVE-2024-4949V8 WebAssemblyOut-of-Bounds Memory Access7.5 HighNo
CVE-2024-4950Downloads SubsystemInappropriate Implementation4.3 MediumNo
FEATURED CODE TEARDOWN

Deep Dive: CVE-2024-4947 Chrome V8 Turbofan Type Confusion Teardown →

Examine the exact C++ Git commit from Chromium Gerrit showing how property accessor prototype transitions fooled the Turbofan optimizer.

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