CVE-2023-6240: Linux Kernel Marvin Vulnerability Side-Channel Leakage in RSA Decryption Operation

linux Updated 02 Oct 2025

Summary

04/02/2024
No i
Medium
6.5

CVE-2023-6240: A Marvin vulnerability side-channel leakage was found in the RSA decryption operation in the Linux Kernel. Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓

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Background

The linux-libc-dev package is a development package that provides the C library headers for the Linux kernel. It is used to compile and build applications that interact with the kernel. The package is an essential component for developers working on Linux-based systems. However, the linux-libc-dev package is vulnerable to a Marvin vulnerability side-channel leakage in the RSA decryption operation.

Vulnerability Detail

The Marvin vulnerability side-channel leakage in the RSA decryption operation in the Linux Kernel allows a network attacker to decrypt ciphertexts or forge signatures. This vulnerability poses a risk to services that rely on the private key for encryption and decryption operations. The issue originates from a side-channel leakage in the RSA decryption process, which can be exploited by an attacker to gain unauthorized access to sensitive information.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no known workaround for this vulnerability at the moment. It is crucial to apply the recommended fix by updating the linux-libc-dev package to the latest version.

Conclusion

The linux-libc-dev package is vulnerable to a Marvin vulnerability side-channel leakage in the RSA decryption operation. It is crucial to update the package to the latest version to mitigate the risk of unauthorized decryption or signature forgery. For further support on vulnerability remediation, please contact DevNack.com.

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FAQ

The linux-libc-dev package provides C library headers for the Linux kernel, allowing developers to compile and build applications that interact with the kernel.

This vulnerability allows a network attacker to decrypt ciphertexts or forge signatures, potentially compromising the confidentiality and integrity of encrypted data.

To fix this vulnerability, update the linux-libc-dev package to version 6.1.90-1 or later using the package manager of your Linux distribution.

There is currently no known workaround for this vulnerability. It is recommended to apply the official fix by updating the linux-libc-dev package.

You can find more information about this vulnerability in the references section of the vulnerability report.

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How To Fix

No fixed version is published for this vulnerability.

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