Vulnerability in Kernel: x86/xen: Add xenpv_restore_regs_and_return_to_usermode()
Summary
GSD-2021-1002576: x86/xen: Add xenpv_restore_regs_and_return_to_usermode(). Affects Kernel versions >= 7f2590a110b837af5679d08fc25c6227c5a8c497, < e19a07833960e50ba6e969751291483d4e94a024. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel is a critical component of the Linux operating system that provides core functionality and acts as an interface between hardware and software. It manages system resources, facilitates communication between processes, and ensures security and stability. The x86/xen subsystem within the Kernel is responsible for supporting Xen virtualization on x86 architectures. It enables the execution of multiple virtual machines on a single physical machine. This vulnerability, identified as GSD-2021-1002576, affects the x86/xen subsystem and can potentially lead to security breaches and unauthorized access to sensitive information.
Vulnerability Detail
The vulnerability, introduced in Kernel version 4.15 by commit 7f2590a110b837af5679d08fc25c6227c5a8c497, and fixed in version 5.15.7 by commit e19a07833960e50ba6e969751291483d4e94a024, involves the function xenpv_restore_regs_and_return_to_usermode(). While the impact and attack plausibility have not been proven, this vulnerability has the potential to be exploited by malicious actors. It is crucial to address this vulnerability promptly to mitigate the risk of unauthorized access and potential system compromise.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As this vulnerability has been fixed in Kernel version 5.15.7, there is no specific workaround available. It is strongly advised to update to the latest version of the Kernel to address the vulnerability.
Conclusion
The vulnerability in the Kernel's x86/xen subsystem, identified as GSD-2021-1002576, poses a potential risk of security breaches and unauthorized access. It is crucial to update the Kernel to version 5.15.7 or later to address this vulnerability. No specific workaround is available, and it is recommended to apply the update to all affected systems. For further support and assistance, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability can potentially lead to security breaches and unauthorized access to sensitive information. However, the actual impact and attack plausibility have not been proven.
This vulnerability was introduced in Kernel version 4.15 and affects all subsequent versions until it was fixed in version 5.15.7.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will provide real-time monitoring and alerts for open-source vulnerabilities, including this one.
At the time of this report, there are no known exploits for this vulnerability. However, it is important to address it promptly to mitigate the risk of potential exploits in the future.
For further support and assistance with vulnerability remediation, you can reach out to info@devnack.com. Our team of experts will be happy to assist you.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
