Vulnerability in Kernel: serial: core: fix transmit-buffer reset and memleak
Summary
GSD-2021-1002398: serial: core: fix transmit-buffer reset and memleak. Affects Kernel versions >= 761ed4a94582ab291aa24dcbea4e01e8936488c8, < e74d9663fd57640fc3394abb5c76fa95b9cc2f2e. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functionalities and services to ensure the proper functioning of the system. One of its components is the serial core, which handles serial communication. Serial communication is commonly used for connecting devices such as modems, printers, and serial ports. However, a vulnerability has been discovered in the serial core that can lead to a transmit-buffer reset and memory leak.
Vulnerability Detail
The vulnerability in the serial core of the Kernel allows an attacker to trigger a transmit-buffer reset, resulting in a memory leak. This can potentially lead to a denial-of-service (DoS) attack or the execution of arbitrary code with elevated privileges. The vulnerability was introduced in version v4.9 of the Linux Kernel and was fixed in version v4.14.257. The specific commit that addressed the issue is e74d9663fd57640fc3394abb5c76fa95b9cc2f2e. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability. However, users can mitigate the risk by ensuring that their systems are up to date with the latest security patches and updates.
Conclusion
The vulnerability in the Kernel's serial core can lead to a transmit-buffer reset and memory leak, potentially enabling a DoS attack or arbitrary code execution. It is crucial to update the Linux Kernel to version v4.14.257 or later to fix this vulnerability. Users can also utilize the Vulert Playground at https://vulert.com/scanner to check if their systems are affected and receive real-time alerts for open-source vulnerabilities. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can potentially lead to a denial-of-service (DoS) attack or the execution of arbitrary code with elevated privileges.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will alert you in real-time if any open-source vulnerabilities, including this one, are detected.
As of now, there is no known exploit for this vulnerability. However, it is important to apply the fix as soon as possible to prevent any potential attacks.
While there is no specific workaround mentioned, keeping your system up to date with the latest security patches and updates can help mitigate the risk.
You can refer to the vulnerability details in the GSD database at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002398.json for more information.
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