Vulnerability in Kernel: Destroy I/O bus devices on unregister failure after sync'ing SRCU
Summary
GSD-2021-1000299: KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU. Affects Kernel versions >= f65886606c2d3b562716de030706dfe1bea4ed5e, < 30f46c6993731efb2a690c9197c0fd9ed425da2d. 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 functionalities and interfaces between hardware and software. It manages system resources, facilitates communication between processes, and ensures security and stability. This vulnerability affects the Kernel and specifically relates to the destruction of I/O bus devices during an unregister failure after synchronizing the SRCU (Synchronizing RCU) mechanism.
Vulnerability Detail
The vulnerability occurs when I/O bus devices are not properly destroyed in the event of an unregister failure. This issue was introduced in version v5.9 of the Linux Kernel and was fixed in version v5.12.4. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) attack or gain unauthorized access to sensitive information. The vulnerability is considered serious and should be addressed promptly.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround available for this vulnerability. It is essential to apply the recommended fix by updating the Linux Kernel to the patched version.
Conclusion
In conclusion, this vulnerability in the Kernel could lead to a denial-of-service attack or unauthorized access to sensitive information. It is crucial to update the Linux Kernel to version v5.12.4 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can potentially lead to a denial-of-service (DoS) attack or unauthorized access to sensitive information.
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 for any open-source vulnerabilities, including this one.
At the time of this report, there are no known public exploits targeting this specific vulnerability. However, it is crucial to apply the recommended fix to mitigate any potential risks.
Yes, this vulnerability can be exploited remotely if an attacker gains access to the affected system.
The recommended solution is to update the Linux Kernel to the patched version. There are no known alternative solutions that provide the same level of security and mitigation.
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