CVE-2026-7985: Google Chrome Use After Free Vulnerability

CVE-2026-7985 Overview

CVE-2026-7985 is a use-after-free vulnerability [CWE-416] in the GPU component of Google Chrome versions prior to 148.0.7778.96. A remote attacker who has already compromised the renderer process can leverage a crafted HTML page to potentially escape the Chrome sandbox. The flaw affects Chrome on Windows, macOS, and Linux desktop platforms. Google addressed the issue in the Stable Channel update for desktop and assigned it a Chromium security severity of Medium, while NVD scores it higher due to the scope change and impact on confidentiality, integrity, and availability.

Critical Impact
Successful exploitation chains this bug with a renderer compromise to break out of Chrome's sandbox, granting attackers code execution at the GPU process privilege level.

Affected Products

Google Chrome versions prior to 148.0.7778.96
Chrome on Microsoft Windows, Apple macOS, and Linux
Chromium-based browsers that integrate the vulnerable GPU code

Discovery Timeline

2026-05-06 - CVE-2026-7985 published to NVD
2026-05-06 - Last updated in NVD database

Technical Details for CVE-2026-7985

Vulnerability Analysis

The vulnerability resides in Chrome's GPU process, which handles graphics acceleration for rendered content. A use-after-free condition occurs when GPU code references memory that has already been deallocated. An attacker who has first compromised the renderer process can send specifically crafted IPC messages or rendering commands that trigger the dangling reference. Because the GPU process sits at a higher privilege boundary than the sandboxed renderer, exploitation enables a sandbox escape. The attack requires user interaction, such as visiting a malicious page, and exploitation complexity is high because the renderer must already be under attacker control.

Root Cause

The root cause is improper object lifetime management within the GPU component. A reference to a freed object is retained and later dereferenced, allowing an attacker who controls the freed memory's contents to manipulate program flow. Use-after-free conditions in browser GPU processes commonly stem from race conditions between worker threads, reentrant callbacks, or mismatched ownership semantics across IPC boundaries.

Attack Vector

Exploitation begins with a crafted HTML page that delivers a renderer compromise. After gaining renderer execution, the attacker issues GPU commands that trigger the use-after-free. By grooming the GPU process heap and reclaiming the freed allocation with attacker-controlled data, the adversary can pivot to arbitrary code execution outside the renderer sandbox. No verified public proof-of-concept code is available. See the Chromium Issue Tracker Item for tracking details and the Google Chrome Update Announcement for the vendor advisory.

Detection Methods for CVE-2026-7985

Indicators of Compromise

Unexpected crashes or restarts of the Chrome GPU process (chrome.exe --type=gpu-process on Windows or equivalent on macOS and Linux).
Anomalous child processes spawned by the GPU process, especially shells or LOLBins.
Outbound network connections originating from the GPU process to untrusted hosts.
Browser telemetry showing repeated visits to a single attacker-controlled domain prior to crash events.

Detection Strategies

Inventory installed Chrome versions across managed endpoints and flag any build below 148.0.7778.96.
Hunt for process trees where chrome.exe GPU child processes launch non-browser binaries or write to disk.
Correlate browser crash events with proxy logs to identify suspicious URLs that preceded the crash.
Monitor for exploitation primitives common to renderer escapes, such as memory pressure spikes followed by privileged process anomalies.

Monitoring Recommendations

Forward Chrome crash dumps and Windows Error Reporting events to a central SIEM for analysis.
Track endpoint EDR telemetry for GPU process behavior deviations including memory allocation anomalies.
Alert on browser processes loading unsigned modules or making unexpected syscalls.

How to Mitigate CVE-2026-7985

Immediate Actions Required

Update Google Chrome to version 148.0.7778.96 or later on all Windows, macOS, and Linux endpoints.
Force-relaunch Chrome after deployment to ensure the patched binary is active in memory.
Audit Chromium-based browsers (Edge, Brave, Opera, Vivaldi) and apply vendor updates as they are released.

Patch Information

Google released the fix in the Chrome Stable Channel update documented in the Google Chrome Update Announcement. Enterprise administrators should deploy version 148.0.7778.96 or later via managed update channels. Chromium downstream vendors will publish corresponding builds; verify each browser's release notes for the merged fix.

Workarounds

Enforce auto-update policies through Group Policy, Jamf, or equivalent MDM tooling to minimize patch lag.
Restrict browsing to trusted sites using URL filtering or enterprise browser policies until patching is verified.
Disable hardware-accelerated GPU features as a temporary measure where workflow allows, reducing exposure of the vulnerable GPU code paths.

bash

# Verify installed Chrome version on Linux
google-chrome --version

# Verify on macOS
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version

# Verify on Windows (PowerShell)
(Get-Item "$Env:ProgramFiles\Google\Chrome\Application\chrome.exe").VersionInfo.ProductVersion