Vulnerability in Kernel: efi/x86: use naked RET on mixed mode call wrapper
Summary
GSD-2022-1004148: efi/x86: use naked RET on mixed mode call wrapper. Affects Kernel versions >= a05146b2ac6ab1deff475a06441b825d176b320e, < fcd83bea60a116250c70552af0b334c79903bb54. 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 functionality for the proper functioning of the system. The efi/x86 module within the Kernel is specifically designed for the x86 architecture and handles the execution of EFI (Extensible Firmware Interface) code. EFI is a specification that defines an interface between the operating system and the platform firmware. This vulnerability affects the efi/x86 module and can potentially lead to security issues.
Vulnerability Detail
The vulnerability in the efi/x86 module involves the improper handling of mixed mode call wrappers. A mixed mode call wrapper is a mechanism that allows calling functions with different calling conventions. The vulnerability arises from the lack of a proper return instruction (RET) in the mixed mode call wrapper, which can result in unexpected behavior and potential security risks. An attacker could potentially exploit this vulnerability to execute arbitrary code or escalate privileges. It is important to note that the impact and attack plausibility of this vulnerability have not been proven.
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
The vulnerability in the efi/x86 module of the Kernel can potentially lead to security risks, including arbitrary code execution and privilege escalation. It is crucial to update the Kernel to the latest version, which includes the necessary fix for this vulnerability. Regularly updating the Kernel helps ensure the system is protected against known vulnerabilities. For additional support and guidance on vulnerability remediation, you can 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 arbitrary code execution or privilege escalation.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
There is no known exploit for this vulnerability at the moment. However, it is important to apply the necessary updates to mitigate any potential risks.
The specific prerequisites for exploiting this vulnerability have not been disclosed. However, it is always recommended to keep the system up to date with the latest security patches to minimize the risk of exploitation.
For further support on vulnerability remediation, you can reach out to info@devnack.com. They can provide assistance and guidance in addressing the vulnerability.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
