CVE-2026-19146 in Chrome
Summary
by MITRE • 08/07/2026
Uninitialized Use in GPU in Google Chrome on Android prior to 151.0.7922.109 allowed a remote attacker who had compromised the renderer process to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 08/07/2026
This vulnerability represents a critical uninitialized memory access flaw in the graphics processing unit implementation within Google Chrome on Android platforms. The issue stems from improper initialization of memory variables within the GPU rendering pipeline, creating potential information disclosure channels that could be exploited by remote attackers who have already compromised the renderer process. The vulnerability falls under the category of CWE-457: Use of Uninitialized Variable, which directly impacts the security posture of mobile browsers by exposing sensitive data that may have been previously allocated in memory but not properly cleared or initialized before use.
The technical exploitation occurs when a crafted HTML page triggers specific GPU operations that access uninitialized memory locations within the renderer process. This allows an attacker who has already achieved process compromise to read potentially sensitive information from adjacent memory regions, including credentials, personal data, or other confidential information that may have been stored in previously allocated memory segments. The vulnerability is particularly concerning because it operates at the intersection of graphics processing and memory management, where traditional security boundaries become blurred due to the complex interaction between CPU and GPU operations.
From an operational impact perspective, this vulnerability enables a sophisticated attacker who has already breached the renderer process to escalate their information gathering capabilities significantly. The ability to extract sensitive data from process memory without requiring additional privilege escalation represents a substantial risk to user privacy and application security. This flaw particularly affects Android users of Chrome versions prior to 151.0.7922.109, where the GPU memory management code did not properly initialize variables before accessing them during graphics rendering operations.
The vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter, specifically in how it leverages browser-based exploitation to achieve information disclosure. It also relates to T1566.002 for spearphishing via social media, as the initial compromise often occurs through malicious web content delivery. The Chromium security severity rating of High indicates that this vulnerability represents a significant threat vector that requires immediate attention and remediation.
Mitigation strategies should focus on updating Chrome to version 151.0.7922.109 or later, which includes proper memory initialization safeguards for GPU operations. Additionally, organizations should implement network-based protections such as content security policies and web application firewalls to reduce the risk of delivering malicious HTML content that could exploit this vulnerability. Browser hardening measures including sandboxing improvements and stricter memory management practices can further reduce the impact surface. Regular security assessments of mobile browser implementations should include thorough testing of GPU memory handling operations to identify similar uninitialized variable vulnerabilities in other graphics processing components.
This vulnerability demonstrates the complexity of modern browser security where traditional memory safety mechanisms must account for specialized hardware acceleration features. The interaction between different memory management systems within Chrome's architecture creates potential gaps that attackers can exploit when they have achieved process compromise through other means. Security teams should monitor for similar patterns in other browser components and ensure comprehensive testing of graphics processing pipelines during vulnerability assessments.