Data-races in ipv4 sysctl_fib_multipath_hash_policy in Linux Kernel
Summary
GSD-2022-1004111: ipv4: Fix data-races around sysctl_fib_multipath_hash_policy. Affects Kernel versions >= bf4e0a3db97eb882368fd82980b3b1fa0b5b9778, < 918ee6592ab9a2ff5316d06cfd4aaef60ccabec6. No fix is published. How to fix ↓
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Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions. It provides essential functionality for managing system resources and facilitating communication between hardware and software components. The ipv4 module within the kernel handles the Internet Protocol version 4 (IPv4) networking stack, including routing and packet forwarding. One of the features of the ipv4 module is the sysctl_fib_multipath_hash_policy, which controls the multipath hash policy for routing decisions.
Vulnerability Detail
The vulnerability identified as GSD-2022-1004111 in the Linux Kernel's ipv4 module involves data-races around the sysctl_fib_multipath_hash_policy. Data-races occur when multiple threads or processes access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security vulnerabilities. In this case, the data-races can result in incorrect or inconsistent values being read or written to the sysctl_fib_multipath_hash_policy variable. The impact and attack plausibility of this vulnerability have not been proven yet, but it has the potential to affect the stability and reliability of the networking stack in the Linux Kernel.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No workaround has been provided for this vulnerability.
Conclusion
The data-races vulnerability in the ipv4 sysctl_fib_multipath_hash_policy of the Linux Kernel can be resolved by updating to version v5.18.15 or later. It is crucial to keep the Linux Kernel up to date to ensure the stability and security of the networking stack. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The Linux Kernel is an open-source operating system kernel that provides essential functionality for managing system resources and facilitating communication between hardware and software components.
The ipv4 module in the Linux Kernel handles the Internet Protocol version 4 (IPv4) networking stack, including routing and packet forwarding.
sysctl_fib_multipath_hash_policy is a feature in the ipv4 module that controls the multipath hash policy for routing decisions.
Data-races occur when multiple threads or processes access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security vulnerabilities.
The impact of this vulnerability is not yet proven, but it has the potential to affect the stability and reliability of the networking stack in the Linux Kernel.
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