Illegal Access Vulnerability in enetc Package
Summary
GSD-2021-1001757: enetc: Fix illegal access when reading affinity_hint. Affects Kernel versions >= d4fd0404c1c95b17880f254ebfee3485693fa8ba, < 6f329d9da2a5ae032fcde800a99b118124ed5270. No fix is published. How to fix ↓
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Background
The enetc package is a component of the Linux Kernel, which is responsible for managing network interfaces. It provides support for the Enhanced Networking Ethernet Controller (ENETC) driver. The ENETC driver enables communication between the network interface card and the operating system. This vulnerability affects the enetc package and can potentially lead to illegal access when reading the affinity_hint. Affinity_hint is a parameter that determines the preferred CPU core for network processing. The vulnerability allows an attacker to bypass access restrictions and gain unauthorized access to sensitive information or execute arbitrary code.
Vulnerability Detail
The vulnerability in the enetc package arises from a flaw introduced in version v5.1 of the Linux Kernel. It was fixed in version v5.14.9 by commit 6f329d9da2a5ae032fcde800a99b118124ed5270. The flaw allows an attacker to exploit an illegal access issue when reading the affinity_hint. By leveraging this vulnerability, an attacker can potentially gain unauthorized access to sensitive information or execute arbitrary code. 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 available for this vulnerability. It is crucial to update the Linux Kernel to the fixed version as soon as possible to address the issue.
Conclusion
The enetc package in the Linux Kernel is vulnerable to an illegal access issue when reading the affinity_hint. This vulnerability can potentially lead to unauthorized access to sensitive information or arbitrary code execution. It is crucial to update the Linux Kernel to version v5.14.9 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The enetc package is a component of the Linux Kernel that provides support for the Enhanced Networking Ethernet Controller (ENETC) driver. It enables communication between the network interface card and the operating system.
Affinity_hint is a parameter in the enetc package that determines the preferred CPU core for network processing.
This vulnerability allows an attacker to gain unauthorized access to sensitive information or execute arbitrary code by exploiting an illegal access issue when reading the affinity_hint.
No, the impact and attack plausibility of this vulnerability have not been proven yet.
To fix this vulnerability, update the Linux Kernel to version v5.14.9 or later by pulling the latest updates from the official Linux Kernel repository and rebuilding the kernel on the affected system.
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