netfilter: nf_tables: initialize registers in nft_do_chain()
Summary
GSD-2022-1002382: netfilter: nf_tables: initialize registers in nft_do_chain(). Affects Kernel versions >= 96518518cc417bb0a8c80b9fb736202e28acdf96, < 88791b79a1eb2ba94e95d039243e28433583a67b. No fix is published. How to fix ↓
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Background
The Kernel package is a fundamental component of the Linux operating system. It provides the core functionality and interfaces for the system's hardware and software components. The nf_tables module within the Kernel is responsible for packet filtering and network address translation. It allows users to define firewall rules and manipulate network traffic. However, a vulnerability has been discovered in the nf_tables module that could potentially be exploited by attackers.
Vulnerability Detail
The vulnerability in the nf_tables module arises from the failure to properly initialize registers in the nft_do_chain() function. This could lead to uninitialized memory being accessed, resulting in unpredictable behavior or potential security vulnerabilities. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in Linux Kernel version v4.19.237 by commit 88791b79a1eb2ba94e95d039243e28433583a67b. However, it was introduced in version v3.13 by commit 96518518cc417bb0a8c80b9fb736202e28acdf96.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to apply the fix by updating the Linux Kernel to a version that includes the necessary patch.
Conclusion
In conclusion, the nf_tables module in the Linux Kernel is vulnerable to uninitialized register issues in the nft_do_chain() function. This vulnerability can potentially lead to unpredictable behavior or security vulnerabilities. It is crucial to update the Linux Kernel to version v4.19.237 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The nf_tables module is a component of the Linux Kernel that provides packet filtering and network address translation capabilities. It allows users to define firewall rules and manipulate network traffic.
The impact of this vulnerability is currently unknown. It could potentially lead to unpredictable behavior or security vulnerabilities if exploited by attackers.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.19.237 or later. This can be done by pulling the latest updates from the official Linux Kernel repository and rebuilding the Kernel.
No, there is no known workaround for this vulnerability. It is crucial to apply the fix by updating the Linux Kernel.
For more information about this vulnerability, you can refer to the official Linux Kernel repository or the provided source link in the vulnerability details.
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