Use-after-free vulnerability in i40e_client_subtask() in Kernel
Summary
GSD-2021-1000323: i40e: Fix use-after-free in i40e_client_subtask(). Affects Kernel versions >= 7b0b1a6d0ac983ce1928432285d0222d4fb7c38b, < 829a713450b8fb127cbabfc1244c1d8179ec5107. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that provides core functionality and acts as an interface between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the overall stability and security of the system. The i40e_client_subtask() function is a part of the i40e driver, which is responsible for managing Intel Ethernet Connection X710/XL710 devices. This vulnerability affects the Kernel and can potentially be exploited to cause a use-after-free condition.
Vulnerability Detail
The use-after-free vulnerability in i40e_client_subtask() arises due to improper memory management. When certain conditions are met, a pointer to a previously freed memory object is still accessed, leading to unpredictable behavior and potential security issues. An attacker could potentially exploit this vulnerability to execute arbitrary code, escalate privileges, or cause a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The use-after-free vulnerability in i40e_client_subtask() in the Kernel can pose potential security risks. It is recommended to update the Linux Kernel to version v5.10.38 or later to mitigate this vulnerability. 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 could potentially allow an attacker to execute arbitrary code, escalate privileges, or cause a denial-of-service condition.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
Yes, a patch is available in the Linux Kernel version v5.10.38. It is recommended to update to this version or a later one to fix the vulnerability.
The remote exploitability of this vulnerability has not been determined yet. However, it is always recommended to apply security patches and updates to mitigate potential risks.
There are no known instances of this vulnerability being exploited at the moment. However, it is important to stay updated with security patches and follow best practices to minimize the risk of exploitation.
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