Double Free Vulnerability in igbvf Package
Summary
GSD-2021-1002750: igbvf: fix double free in igbvf_probe. Affects Kernel versions >= d4e0fe01a38a073568aee541a0247fe734095979, < 944b8be08131f5faf2cd2440aa1c24a39a163a54. No fix is published. How to fix ↓
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Background
The igbvf package is a component of the Linux Kernel, which is responsible for providing support for Intel Gigabit Ethernet Virtual Function (VF) devices. It allows virtual machines to access the network through the VF interface. The package is widely used in Linux-based systems and is critical for networking functionality.
Vulnerability Detail
The vulnerability identified in the igbvf package is a double free issue that occurs during the igbvf_probe function. This vulnerability was introduced in version v2.6.30 of the Linux Kernel and has been present until version v5.15.11. A double free vulnerability refers to a memory management flaw where a program attempts to free the same memory location twice, which can lead to various security issues, including crashes, data corruption, and potential remote code execution. Exploiting this vulnerability could allow an attacker to gain unauthorized access to the system or execute arbitrary code.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can avoid using the affected functionality or disable the igbvf module if it is not required for their system. However, this may impact the networking capabilities of virtual machines using Intel Gigabit Ethernet VF devices.
Conclusion
The double free vulnerability in the igbvf package can have severe consequences, including crashes, data corruption, and potential remote code execution. It is crucial to update the Linux Kernel to version v5.15.11 or later to mitigate this vulnerability. If you require further assistance or support in addressing this vulnerability, please contact DevNack.com.
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FAQ
The vulnerability can potentially lead to crashes, data corruption, and remote code execution. Exploiting this vulnerability could allow an attacker to gain unauthorized access to the system.
You can use the Vulert Playground at Vulert Scanner to check if your application is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and Vulert will provide real-time alerts for open-source vulnerabilities, including this one.
Yes, a patch for this vulnerability is available in version v5.15.11 of the Linux Kernel. It is recommended to update to this version or later to fix the issue.
While updating the Linux Kernel is the recommended solution, you can mitigate the risk by avoiding the use of the affected functionality or disabling the igbvf module if it is not necessary for your system. However, this may impact the networking capabilities of virtual machines using Intel Gigabit Ethernet VF devices.
You can find more information about this vulnerability, including the specific commits and affected versions, in the vulnerability database entry at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002750.json.
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