Data-races in cipso sysctl in Linux Kernel
Summary
GSD-2022-1004574: cipso: Fix data-races around sysctl. Affects Kernel versions >= 446fda4f26822b2d42ab3396aafcedf38a9ff2b6, < fe2a35fa2c4f9c8ce5ef970eb927031387f9446a. 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 cipso module in the Linux Kernel is used for implementing the Common IP Security Option (CIPSO) protocol, which provides mandatory access control (MAC) for IP packets. The sysctl interface is used to configure and control various kernel parameters. However, a vulnerability has been discovered in the cipso sysctl code that can lead to data-races.
Vulnerability Detail
The data-races vulnerability in the cipso sysctl code can result in inconsistent or unexpected behavior when multiple threads or processes concurrently access and modify the same data. This can lead to race conditions, where the outcome of the program depends on the relative timing of events. In the context of the cipso sysctl code, this vulnerability can potentially be exploited by an attacker to manipulate or corrupt kernel memory, leading to privilege escalation or denial of service attacks. The vulnerability was introduced in version v2.6.19 of the Linux Kernel and has been fixed in version v5.10.132.
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 data-races vulnerability in the cipso sysctl code of the Linux Kernel can have serious security implications, including privilege escalation and denial of service attacks. It is crucial to update the Linux Kernel to version v5.10.132 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The cipso module in the Linux Kernel is responsible for implementing the Common IP Security Option (CIPSO) protocol, which provides mandatory access control (MAC) for IP packets.
The sysctl interface in the Linux Kernel is used to configure and control various kernel parameters.
A data-race vulnerability occurs when multiple threads or processes concurrently access and modify the same data, leading to inconsistent or unexpected behavior.
The data-races vulnerability in the cipso sysctl code can potentially be exploited by an attacker to manipulate or corrupt kernel memory, leading to privilege escalation or denial of service attacks.
You can use Vulert's playground (https://vulert.com/scanner) to check if your Linux Kernel is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for open-source vulnerabilities in real-time.
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