Vulnerability in Kernel: No Need to Simulate Speculative Domain for Immediates
Summary
GSD-2021-1000666: bpf: No need to simulate speculative domain for immediates. Affects Kernel versions < a9d5ac78e7ca194d8fc570d26640395ffd6e9367. 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 functionalities and acts as a bridge between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the overall stability and security of the system. This vulnerability specifically affects the Kernel's handling of immediates in the Berkeley Packet Filter (BPF) subsystem.
Vulnerability Detail
The vulnerability arises from an unnecessary simulation of the speculative domain for immediates in the BPF subsystem of the Kernel. This simulation can potentially lead to security vulnerabilities, although the actual impact and attack plausibility have not been proven. The vulnerability was introduced in an earlier version of the Linux Kernel and has been fixed in version v4.19.193. Exploiting this vulnerability could allow an attacker to execute arbitrary code or cause a denial-of-service (DoS) condition.
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
There is no specific workaround provided for this vulnerability. However, updating the Linux Kernel to the latest version is the recommended course of action.
Conclusion
In conclusion, the vulnerability in the Kernel's BPF subsystem regarding the simulation of speculative domain for immediates has been addressed in version v4.19.193. It is crucial to update the Linux Kernel to the latest version to ensure the security and stability of the system. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
Exploiting this vulnerability could allow an attacker to execute arbitrary code or cause a denial-of-service (DoS) condition.
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 information available regarding the exploitation of this vulnerability in the wild.
The recommended mitigation is to update the Linux Kernel to version v4.19.193 or later, which includes the necessary patch to address the vulnerability.
The discoverer of this vulnerability is currently unknown.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
