Vulnerability in Kernel: tcp page frag corruption on page fault
Summary
GSD-2021-1002490: tcp: fix page frag corruption on page fault. Affects Kernel versions >= 5640f7685831e088fe6c2e1f863a6805962f8e81, < c6f340a331fb72e5ac23a083de9c780e132ca3ae. 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 functionality and acts as a bridge between hardware and software. It manages system resources, facilitates communication between processes, and handles various low-level tasks. The vulnerability in focus affects the TCP (Transmission Control Protocol) implementation within the Kernel. TCP is a widely used transport protocol that ensures reliable and ordered delivery of data across networks. This vulnerability specifically pertains to page frag corruption on page fault, which can lead to potential security risks.
Vulnerability Detail
The vulnerability arises due to a flaw in the TCP implementation, which can result in page frag corruption when a page fault occurs. A page fault is an exception that occurs when a program attempts to access a memory page that is not currently mapped to physical memory. This corruption can potentially be exploited by attackers to gain unauthorized access, execute arbitrary code, or cause a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven yet, but it is crucial to address it to mitigate potential risks.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability. It is advised to apply the fix by updating the Kernel to the recommended version.
Conclusion
The vulnerability in the Kernel's TCP implementation, specifically regarding page frag corruption on page fault, poses potential security risks. To mitigate these risks, it is crucial to update the Linux Kernel to version v5.10.84 or later. This fix addresses the vulnerability and ensures the system's protection. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven, but it has the potential to be exploited by attackers for unauthorized access, code execution, or causing a denial-of-service condition.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. It provides real-time monitoring and alerts for open-source vulnerabilities without requiring access to the code or installation.
As of now, there is no known exploit for this vulnerability. However, it is essential to apply the recommended fix to mitigate potential risks.
There are no reported incidents related to this vulnerability at the moment. However, it is advisable to address the vulnerability promptly to prevent any potential security breaches.
You can refer to the vulnerability details in the GSD database at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002490.json for more information about this vulnerability.
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