UAF Vulnerability in Kernel package
Summary
GSD-2021-1001776: can: peak_pci: peak_pci_remove(): fix UAF. Affects Kernel versions >= e6d9c80b7ca1504411ad6d7acdb8683e4ae1c9cd, < 1c616528ba4aeb1125a06b407572ab7b56acae38. No fix is published. How to fix ↓
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Background
The Kernel package is a fundamental component of the Linux operating system, responsible for managing system resources and providing an interface between hardware and software. It plays a crucial role in the overall functionality and stability of the system. However, a vulnerability has been discovered in the Kernel package that could lead to a Use-After-Free (UAF) issue.
Vulnerability Detail
The UAF vulnerability in the Kernel package, specifically in the 'peak_pci_remove()' function of the 'peak_pci' module, allows an attacker to exploit a use-after-free condition. This occurs when a reference to a dynamically allocated object is used after it has been freed, leading to potential memory corruption or arbitrary code execution. The vulnerability was introduced in version v3.4 of the Linux Kernel and has been fixed in version v4.4.290.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the fix by updating the Kernel package to the latest version.
Conclusion
The UAF vulnerability in the Kernel package poses a significant risk to the stability and security of Linux systems. It is recommended to update the Kernel package to version v4.4.290 or later to address this vulnerability. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
The UAF vulnerability in the Kernel package can potentially allow an attacker to execute arbitrary code or cause memory corruption, leading to system instability or unauthorized access to sensitive information.
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, including this UAF vulnerability in the Kernel package.
No, the UAF vulnerability was introduced in version v3.4 of the Linux Kernel. Versions prior to v3.4 are not affected, while versions from v4.4.290 onwards have the fix implemented.
The UAF vulnerability requires local access to the system to exploit. It cannot be exploited remotely over a network.
At the time of this report, there is no known evidence of this vulnerability being actively exploited in the wild. However, it is crucial to apply the fix as soon as possible to mitigate any potential risks.
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