CVE-2026-106275 in Chrome
Summary
by MITRE • 10/06/2026
Uninitialized resource in GPU in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker to read memory outside the sandbox via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 10/06/2026
The vulnerability identified as an uninitialized resource issue within the GPU subsystem of Google Chrome on Android, specifically in versions prior to 155.0.8059.39, represents a critical failure in memory management and state initialization. This flaw allows for arbitrary code execution or information disclosure by exploiting the improper handling of graphics processing unit resources during rendering operations. The root cause lies in the browser's GPU process failing to properly initialize specific data structures or buffers before they are accessed or utilized by subsequent rendering commands. When a malicious actor crafts an HTML page that triggers these uninitialized paths, the GPU driver may read from memory locations that have not been allocated or cleared for this purpose. This behavior deviates significantly from secure coding practices where all resources must be explicitly initialized to safe default states prior to use, thereby preventing the leakage of sensitive data contained in adjacent memory regions.
From a technical perspective, this vulnerability falls under the category of improper initialization as defined by Common Weakness Enumeration (CWE) standards, specifically CWE-908 which covers Use of Uninitialized Resource. The exploitation vector involves a remote attacker delivering a specially crafted HTML page to an unsuspecting user via email or a malicious website. Upon loading this page, the browser's rendering engine processes graphics commands that interact with the GPU subsystem. Due to the uninitialized state of certain resources, the GPU may interpret garbage data as valid instructions or memory addresses. This can lead to out-of-bounds reads where the system accesses memory outside the intended sandbox boundaries. The Chromium security team has classified this issue with a Low severity rating, indicating that while the vulnerability is exploitable and poses a risk to user privacy and system integrity, it may require specific conditions or limited attack vectors compared to higher-severity flaws like use-after-free or buffer overflow issues.
The operational impact of this vulnerability centers on information disclosure and potential sandbox escape. By reading memory outside the sandbox, an attacker could potentially extract sensitive data such as cookies, session tokens, passwords, or other personally identifiable information stored in browser memory. In more severe scenarios, if the uninitialized resource leads to predictable memory layouts, it might facilitate further exploitation steps that break out of Chrome's multi-process architecture and its associated security boundaries. This undermines the fundamental isolation model designed to protect users from malicious web content. The ATT&CK framework categorizes such behaviors under techniques related to Credential Access or Collection via Browser Extension Abuse if extensions are involved, but more directly aligns with T1059 Command and Scripting Interpreter through JavaScript execution leading to memory access violations that can be leveraged for lateral movement within the device's file system.
Mitigation strategies primarily involve updating Google Chrome on Android to version 155.0.8059.39 or later, where this initialization flaw has been corrected by developers ensuring all GPU resources are properly zeroed out or allocated before use. Users should enable automatic updates for the browser application to ensure timely patching of such vulnerabilities. Additionally, security best practices recommend disabling JavaScript on untrusted sites if possible, although this is often impractical due to modern web dependencies. For enterprise environments, deploying mobile device management solutions that enforce minimum version requirements can help mitigate exposure. Developers contributing to Chromium-based projects should adhere strictly to static analysis tools and dynamic testing methodologies that detect uninitialized variable usage early in the development lifecycle, reducing the likelihood of such defects reaching production builds.