Overflow Vulnerability in nbd Package

Kernel Updated 02 Oct 2025

Summary

28/06/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1002966: nbd: fix possible overflow on 'first_minor' in nbd_dev_add(). Affects Kernel versions >= b0d9111a2d53785847763c64c40af2d4c4c5a8b7, < c6399f6f2f84921feebbf985e3819b1ad851ebe5. No fix is published. How to fix ↓

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Background

The nbd package is a component of the Linux Kernel ecosystem. It provides support for Network Block Devices (NBD), allowing remote storage devices to be accessed over a network. The nbd package is responsible for managing the creation and configuration of NBD devices. It is an integral part of the Linux Kernel and is widely used in various systems and applications.

Vulnerability Detail

The vulnerability identified in the nbd package is related to a possible overflow on the 'first_minor' variable in the nbd_dev_add() function. This vulnerability was introduced in version v4.11 of the Linux Kernel and was fixed in version v5.17.2. The overflow could potentially lead to security issues, although the actual impact and attack plausibility have not been proven. The vulnerability can be exploited by an attacker to manipulate the 'first_minor' value, potentially causing unexpected behavior or system crashes.

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 v5.17.2 or later. This update includes the necessary patch to address the overflow issue in the nbd package. Users should follow the standard procedures for updating the Linux Kernel on their respective systems.

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Workaround

There is no specific workaround mentioned for this vulnerability. The recommended approach is to apply the fix by updating the Linux Kernel to the latest version.

Conclusion

The overflow vulnerability in the nbd package can be addressed by updating the Linux Kernel to version v5.17.2 or later. It is important to stay updated with the latest security patches to ensure the integrity and security of systems using the nbd package. For further support on vulnerability remediation, you can reach out to DevNack.com.

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