Description

Use after free in GPU in Google Chrome prior to 151.0.7922.109 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.3",
  "pubDate": "2026-08-06T22:16:56.047Z",
  "pubdate": "2026-08-06T22:16:56.047Z",
  "executiveSummary": "A use-after-free vulnerability exists within the GPU component of Google Chrome prior to version 151.0.7922.109. This vulnerability allows a remote attacker who has already successfully compromised the renderer process to potentially achieve a sandbox escape through the ingestion of a specially crafted HTML page. The security severity of this issue is rated as High by Chromium security standards.\nThe flaw introduces severe risk implications, as escaping the browser sandbox compromises the underlying operating system isolation boundaries designed to protect the host system from untrusted web content. Exploitation requires the attacker to first compromise the rendering engine context, typically achieved via a separate remote code execution vulnerability within the content process. Successful exploitation grants the attacker elevated capabilities outside the restricted browser sandbox environment.",
  "technicalDetails": "The vulnerability resides in the GPU subsystem of Google Chrome, specifically involving memory management errors where a pointer is referenced after the underlying memory has been deallocated or freed. In the context of modern browser architectures, the GPU process handles hardware-accelerated graphics operations and interacts directly with system graphics drivers.\nThe attack flow begins when a remote attacker leverages an initial entry vector—such as a remote code execution exploit—to compromise the renderer process via a crafted HTML page containing malicious JavaScript or WebGL payloads. Once control of the renderer process is established, the attacker interacts with the GPU process through Inter-Process Communication (IPC) interfaces.\nDue to improper object lifetime management and synchronization within the GPU component, a use-after-free condition is triggered when specific commands or resource allocations reference freed memory locations. By manipulating heap layouts and exploiting this dangling pointer reference, the attacker can achieve arbitrary read and write primitives within the context of the GPU process.\nBecause the GPU process operates with higher privileges and broader system access than the heavily restricted renderer sandbox, compromising the GPU process provides a critical stepping stone for a sandbox escape. Post-exploitation impact includes the potential execution of arbitrary code outside the browser sandbox, allowing the adversary to interact with the underlying operating system using the privileges of the browser application."
}