Data Race Vulnerability in Linux Kernel - icmp
Summary
GSD-2022-1004398: icmp: Fix a data-race around sysctl_icmp_errors_use_inbound_ifaddr. Affects Kernel versions >= 1c2fb7f93cb20621772bf304f3dba0849942e5db, < de9490c32bc10020efdd1509689a28f197d6dfb8. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware. The icmp module in the Linux Kernel handles Internet Control Message Protocol (ICMP) packets, which are used for network diagnostics and error reporting. ICMP errors can be generated in response to various network events, such as unreachable hosts or network congestion. The sysctl_icmp_errors_use_inbound_ifaddr function in the icmp module controls whether ICMP errors should use the inbound interface address. However, a data race vulnerability has been discovered in this function, which could lead to unpredictable behavior and potential security issues.
Vulnerability Detail
The data race vulnerability in the sysctl_icmp_errors_use_inbound_ifaddr function of the icmp module allows for concurrent access to shared data without proper synchronization. This can result in race conditions, where the outcome of the program depends on the relative timing of events. In the context of this vulnerability, it means that multiple threads or processes accessing the sysctl_icmp_errors_use_inbound_ifaddr function simultaneously can lead to inconsistent or incorrect behavior. An attacker could potentially exploit this vulnerability to manipulate ICMP error handling and disrupt network communication or launch more sophisticated attacks. The vulnerability was introduced in version v2.6.12 of the Linux Kernel and has been fixed in version v5.15.56.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As this vulnerability has been fixed in the latest version of the Linux Kernel, there is no specific workaround available. It is strongly advised to update to the patched version to ensure the security and stability of the system.
Conclusion
The data race vulnerability in the sysctl_icmp_errors_use_inbound_ifaddr function of the icmp module in the Linux Kernel can lead to unpredictable behavior and potential security issues. It is crucial to update the Linux Kernel to version v5.15.56 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The data race vulnerability in the sysctl_icmp_errors_use_inbound_ifaddr function can lead to unpredictable behavior and potential security issues. It could be exploited by an attacker to manipulate ICMP error handling and disrupt network communication or launch more sophisticated attacks.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for any open-source vulnerabilities, including this data race vulnerability in the Linux Kernel.
Yes, the data race vulnerability in the sysctl_icmp_errors_use_inbound_ifaddr function has been fixed in version v5.15.56 of the Linux Kernel. It is recommended to update to this version or later to ensure the security of your system.
While the data race vulnerability itself does not provide remote code execution capabilities, it could be leveraged by an attacker to disrupt network communication and potentially facilitate other attacks. Therefore, it is important to apply the necessary updates to mitigate the risk.
There are no known instances of this vulnerability being actively exploited in the wild. However, it is always recommended to stay updated with the latest security patches to protect against potential threats.
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