Vulnerability in Linux Kernel: bpf - No Need to Simulate Speculative Domain for Immediates

Kernel Updated 02 Oct 2025

Summary

04/06/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000615: bpf: No need to simulate speculative domain for immediates. Affects Kernel versions < 27acfd11ba179b746f55077edf9750f8f7cb1cb6. 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 bpf (Berkeley Packet Filter) subsystem within the Linux Kernel allows for efficient packet filtering and processing. It is used extensively in networking and security applications. However, a vulnerability has been discovered in the bpf subsystem that could potentially be exploited by attackers.

Vulnerability Detail

The vulnerability in the bpf subsystem of the Linux Kernel arises from the unnecessary simulation of speculative domains for immediates. This vulnerability allows an attacker to potentially manipulate the behavior of the bpf subsystem and execute arbitrary code. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in the Linux Kernel version v5.10.41 by commit 27acfd11ba179b746f55077edf9750f8f7cb1cb6.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.41 or later. This can be done by following the standard update process for the Linux distribution being used. It is important to regularly update the Linux Kernel to ensure the latest security patches are applied.

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Workaround

There is no specific workaround mentioned for this vulnerability. However, it is strongly advised to update the Linux Kernel to the fixed version as mentioned in the 'how_to_fix' section.

Conclusion

The vulnerability in the bpf subsystem of the Linux Kernel has been identified and fixed in version v5.10.41. It is crucial to update the Linux Kernel to the fixed version to ensure the security of the system. For further support on vulnerability remediation, please contact DevNack.com.

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