memcpy() overflow vulnerability in Kernel: qed
Summary
GSD-2021-1001127: net: qed: Fix memcpy() overflow of qed_dcbx_params(). Affects Kernel versions < ca0e1fefbb534cc86296d9e5d116b0bf49084112. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel is a critical component of the Linux operating system that manages system resources and facilitates communication between hardware and software. It provides essential functionalities for the proper functioning of the system. The qed module in the Kernel is responsible for handling network-related tasks. It includes the qed_dcbx_params() function, which is used to copy data using the memcpy() function. However, a vulnerability has been discovered in this function that can lead to a buffer overflow.
Vulnerability Detail
The memcpy() overflow vulnerability in the qed_dcbx_params() function allows an attacker to overwrite adjacent memory locations, potentially leading to arbitrary code execution or a system crash. By exploiting this vulnerability, an attacker could gain unauthorized access to sensitive information or disrupt the normal operation of the system. The vulnerability has been fixed in Linux Kernel version v5.10.47 by commit ca0e1fefbb534cc86296d9e5d116b0bf49084112.
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 v5.10.47 or later. This can be done by downloading the latest Kernel source code from the official repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and compiling it according to the provided instructions. Alternatively, users can wait for their Linux distribution to release an updated package containing the fix.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
There is no known workaround for this vulnerability. It is essential to apply the fix mentioned above to ensure the security and stability of the system.
Conclusion
The memcpy() overflow vulnerability in the Kernel's qed module poses a significant risk to the security and stability of affected systems. It is crucial to update the Linux Kernel to version v5.10.47 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The vulnerability can potentially allow an attacker to execute arbitrary code or crash the system, leading to unauthorized access or disruption of services.
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 known vulnerabilities.
At the time of this report, there is no known public exploit for this vulnerability. However, it is crucial to apply the fix as soon as possible to mitigate any potential risks.
Yes, this vulnerability can be exploited remotely if the affected system is exposed to the internet and the necessary conditions for exploitation are met.
To exploit this vulnerability, an attacker would need to have the ability to send specially crafted network packets to the targeted system.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
Follow Vulert in Google
Get more Vulert vulnerability and dependency-security updates in Google Search and AI results.