UAF in tlan_remove_one in Kernel
Summary
UVI-2021-1001408: net: ti: fix UAF in tlan_remove_one. Affects Kernel versions >= 1e0a8b13d35510e711fdf72e9a3e30bcb2bd49fa, < 0538b0ab7d2c396e385694228c7cdcd2d2c514e9. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and interfaces with hardware devices. It manages system resources, facilitates communication between software and hardware, and ensures the stability and security of the system. The tlan_remove_one function in the Kernel's networking subsystem is responsible for removing a network interface. However, a use-after-free (UAF) vulnerability has been identified in this function, which could lead to potential security issues.
Vulnerability Detail
The UAF vulnerability in tlan_remove_one arises from improper handling of network interface removal. An attacker could exploit this vulnerability by manipulating the network interface removal process, causing a use-after-free condition. This could potentially result in arbitrary code execution or a denial-of-service (DoS) attack. The vulnerability was introduced in version v3.10 of the Linux Kernel and was fixed in version v4.14.241. The fix involves commit 0538b0ab7d2c396e385694228c7cdcd2d2c514e9.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
The UAF vulnerability in tlan_remove_one in the Kernel poses a potential security risk, allowing for arbitrary code execution or a DoS attack. It is crucial to update the Linux Kernel to version v4.14.241 or later to mitigate this vulnerability. For further assistance or support in vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can vary depending on the attacker's capabilities and the system's configuration. It could potentially lead to arbitrary code execution or a denial-of-service (DoS) attack.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it for any open-source vulnerabilities, including this one.
At the time of this report, no known exploits for this vulnerability have been disclosed. However, it is always recommended to apply security patches promptly to mitigate potential risks.
This vulnerability can potentially be exploited remotely if the attacker can send malicious network traffic to the targeted system. However, the exact conditions for remote exploitation may depend on various factors, such as network configuration and access controls.
For more details about this vulnerability, including technical specifics and the fix implementation, you can refer to the source link provided in the database_specific section of this report.
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