Locking Issues with Loops over idev->addr_list in ipv6
Summary
GSD-2022-1002837: ipv6: fix locking issues with loops over idev->addr_list. Affects Kernel versions < ad798bfc29b702fb69945c2185bd457857aa425e. No fix is published. How to fix ↓
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Background
The Linux Kernel is an open-source monolithic Unix-like computer operating system kernel. It is responsible for managing the system's resources and providing a bridge between the hardware and software components. The ipv6 module in the Linux Kernel handles the implementation of the Internet Protocol version 6 (IPv6) networking protocol. IPv6 is designed to replace the older IPv4 protocol and offers a larger address space and improved security features. However, a vulnerability has been discovered in the ipv6 module that involves locking issues with loops over idev->addr_list.
Vulnerability Detail
The vulnerability in the ipv6 module arises from locking issues when iterating over the idev->addr_list data structure. These locking issues can lead to race conditions and potential data corruption or inconsistent states. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) condition or execute arbitrary code with elevated privileges. 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 mentioned for this vulnerability.
Conclusion
The vulnerability involving locking issues with loops over idev->addr_list in the ipv6 module of the Linux Kernel has been identified and fixed in version v5.18.3. Users are advised to update their Linux Kernel to the latest version to mitigate the risk of potential exploitation. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The Linux Kernel is an open-source monolithic Unix-like computer operating system kernel that manages system resources and provides a bridge between hardware and software components.
The ipv6 module in the Linux Kernel handles the implementation of the Internet Protocol version 6 (IPv6) networking protocol, which offers a larger address space and improved security features compared to IPv4.
The impact of this vulnerability is not yet proven, but it could potentially lead to a denial-of-service (DoS) condition or allow an attacker to execute arbitrary code with elevated privileges.
To fix this vulnerability, users should update their Linux Kernel to version v5.18.3 or later by downloading the updated kernel source code from the official Linux Kernel repository and compiling it.
No specific workaround has been mentioned for this vulnerability.
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