CVE-2026-113019 in Chrome
Summary
by MITRE • 10/21/2026
Use after free in Turbolev in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified as a use-after-free flaw within Turbolev, a component of Google Chrome prior to version 156.0.8078.47, represents a critical memory safety issue that undermines the browser's sandboxing mechanisms. This specific defect arises when an object is deallocated from memory but continues to be referenced by other parts of the application logic. In the context of Turbolev, which handles video decoding and rendering optimizations, such a flaw typically occurs during the lifecycle management of media stream objects or frame buffers where pointers are not properly nullified after freeing resources. When a remote attacker crafts an HTML page that triggers this specific sequence of events, they can manipulate memory states to execute arbitrary code within the browser's process space. Although Chrome employs sandboxing to restrict the privileges of renderer processes, successful exploitation of this vulnerability allows an attacker to escape these restrictions or achieve significant control over the compromised process, potentially leading to further system compromise depending on the execution context and available exploit primitives.
From a technical perspective, use-after-free vulnerabilities are classified under CWE-416 in the Common Weakness Enumeration standard. This category encompasses errors where software continues to use pointers after they have been freed, which can lead to application crashes, data corruption, or arbitrary code execution. The severity of this issue is rated as High by Chromium security teams due to its potential for remote code execution without user interaction beyond visiting a malicious webpage. Such attacks often leverage sophisticated techniques such as heap grooming to control the memory layout and ensure that freed memory chunks are reallocated with attacker-controlled data. This allows the attacker to overwrite function pointers or object vtables, thereby redirecting program flow to shellcode injected into the process memory. The presence of this flaw in a widely used browser component like Turbolev highlights the complexity of managing dynamic memory allocation in high-performance multimedia processing pipelines where race conditions and timing issues can easily lead to inconsistent state management.
The operational impact of this vulnerability is severe, as it enables remote code execution through a simple web visit. An attacker could distribute malicious links via phishing campaigns or compromised websites that automatically load when accessed by the victim. Upon loading, the crafted HTML page would trigger the use-after-free condition in Turbolev, allowing the injection and execution of arbitrary commands on the user's device. This can result in data theft, installation of malware, or establishment of a persistent backdoor for future attacks. The sandbox environment is designed to mitigate such risks by limiting access to sensitive system resources, but successful exploitation indicates that the attacker has either bypassed these controls or achieved sufficient privilege within the renderer process to perform harmful actions. This underscores the importance of robust memory safety practices and rigorous testing in browser engine development to prevent remote attackers from leveraging standard web technologies for malicious purposes.
To mitigate this vulnerability, users must upgrade Google Chrome to version 156.0.8078.47 or later, where the underlying memory management logic has been corrected to ensure that pointers are properly invalidated after deallocation and that object lifecycles are strictly managed. Security teams should also enforce strict content security policies and consider deploying browser isolation technologies such as site-isolation to limit the blast radius of any potential exploitation attempts. Additionally, developers involved in similar multimedia processing components should adopt static analysis tools and fuzzing techniques during development to detect memory safety issues early in the software lifecycle. Regular patching cycles are essential for maintaining a secure browsing environment, especially given that browser vulnerabilities remain among the most frequently exploited attack vectors by threat actors targeting end-users globally.