ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup
Summary
GSD-2021-1001719: ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup. Affects Kernel versions >= 4a9b32f30f805ca596d76605903a48eab58e0b88, < 2744341dd52e935344ca1b4bf189ba0d182a3e8e. No fix is published. How to fix ↓
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Background
The ixgbe package is a network driver for Intel 10 Gigabit Ethernet Adapters. It provides support for various features and functionalities of these adapters, enabling network communication. However, a vulnerability has been identified in the ixgbe_xdp_setup function, which can lead to a NULL pointer dereference. This vulnerability can potentially be exploited by an attacker to cause a denial-of-service condition or execute arbitrary code.
Vulnerability Detail
The vulnerability in the ixgbe_xdp_setup function arises from a NULL pointer dereference. When certain conditions are met, the function fails to handle a NULL pointer correctly, leading to a crash or potential code execution. This vulnerability was introduced in version v5.0 of the Linux Kernel and has been fixed in version v5.14.10. 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
As a workaround, if updating the Linux Kernel is not immediately feasible, it is recommended to disable the affected functionality or restrict access to it. This can be achieved by modifying the system configuration or applying specific kernel parameters. However, it is important to note that these workarounds may limit certain network capabilities and should be considered temporary measures until the kernel update can be applied.
Conclusion
In conclusion, the ixgbe package in the Linux Kernel is vulnerable to a NULL pointer dereference in the ixgbe_xdp_setup function. This vulnerability can potentially lead to a denial-of-service condition or arbitrary code execution. It is crucial to update the Linux Kernel to version v5.14.10 or later to mitigate this vulnerability. If immediate kernel update is not possible, applying workarounds and restricting access to the affected functionality can provide temporary protection. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can potentially lead to a denial-of-service condition or allow an attacker to execute arbitrary code on the affected system.
You can use tools like Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert Playground allows you to analyze your manifest file, such as package-lock.json, and provides real-time alerts for open-source vulnerabilities.
Yes, the vulnerability has been fixed in Linux Kernel version v5.14.10. It is recommended to update the kernel to this version or a later one to mitigate the vulnerability.
Yes, you can apply workarounds such as disabling the affected functionality or restricting access to it. However, these measures may limit certain network capabilities and should be considered temporary until the kernel update can be applied.
You can find more information about this vulnerability in the Open Source Vulnerability Database (OSVDB) entry GSD-2021-1001719: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001719.json
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