Vulnerability in Kernel: serial: core: fix transmit-buffer reset and memleak
Summary
GSD-2021-1002579: serial: core: fix transmit-buffer reset and memleak. Affects Kernel versions >= 761ed4a94582ab291aa24dcbea4e01e8936488c8, < 64e491c1634b73d3bddc081d08620bdc92ab2c12. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities and services to enable the proper functioning of the system. One of its key features is the serial core, which handles communication between the computer and external devices through 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 and cause a memory leak. This can potentially lead to a denial of service (DoS) condition or enable an attacker to execute arbitrary code with elevated privileges. The vulnerability was introduced in version v4.9 of the Linux Kernel and has been fixed in version v5.15.7. The specific commit that addresses this issue is 64e491c1634b73d3bddc081d08620bdc92ab2c12.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.15.7 or later. This can be done by pulling the latest version from the official Git repository: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The vulnerability in the Kernel's serial core can lead to a transmit-buffer reset and memory leak, potentially resulting in a denial of service (DoS) condition or arbitrary code execution. It is crucial to update the Linux Kernel to version v5.15.7 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a denial of service (DoS) condition or enable an attacker to execute arbitrary code with elevated privileges.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it in real-time.
Yes, the vulnerability has been fixed in version v5.15.7 of the Linux Kernel. It is recommended to update to this version or later.
Yes, this vulnerability can be exploited remotely if the affected system is accessible over a network.
There are no known instances of this vulnerability being exploited in the wild at the time of this report.
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