Vulnerability in Kernel: xen_hvm_init_time_ops() Delay
Summary
GSD-2022-1001032: xen: delay xen_hvm_init_time_ops() if kdump is boot on vcpu>=32. Affects Kernel versions < b6f6b353d6c765b83c9e5e518a44ca1ae40fe227. 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 fundamental component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionalities such as process management, memory management, and device drivers. This vulnerability specifically affects the Kernel's xen_hvm_init_time_ops() function when the kdump feature is enabled on a virtual CPU (vCPU) with an index greater than or equal to 32.
Vulnerability Detail
The vulnerability arises from a timing issue in the xen_hvm_init_time_ops() function when kdump is booting on a vCPU with an index of 32 or higher. This issue can potentially lead to a race condition, allowing an attacker to exploit the system and gain unauthorized access or perform other malicious activities. The impact and attack plausibility of this vulnerability have not been proven yet.
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
No specific workaround has been provided for this vulnerability.
Conclusion
In conclusion, this vulnerability in the Kernel's xen_hvm_init_time_ops() function when kdump is booting on a vCPU with an index of 32 or higher has been addressed in the Linux Kernel version v5.17.3. It is crucial to update the Kernel to this version or a later one to mitigate the risk of exploitation. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability is not yet proven. However, if successfully exploited, it could lead to unauthorized access or other malicious activities.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert uses a manifest file like package-lock.json to monitor and alert in real-time for open-source vulnerabilities.
No specific workaround has been provided for this vulnerability. It is recommended to update the Kernel to the fixed version.
More details about the fix can be found in the commit b6f6b353d6c765b83c9e5e518a44ca1ae40fe227 in the Linux Kernel repository.
The discovery of this vulnerability was automated and intended to aid in the discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
