Vulnerability in cifs package: Return correct error code from smb2_get_enc_key

Kernel Updated 02 Oct 2025

Summary

31/05/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000178: cifs: Return correct error code from smb2_get_enc_key. Affects Kernel versions >= 61cfac6f267dabcf2740a7ec8a0295833b28b5f5, < 93f3339b22ba17e66f0808737467b70ba087eaec. No fix is published. How to fix ↓

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Background

The cifs package is a component of the Linux Kernel ecosystem. It provides support for the Common Internet File System (CIFS) protocol, allowing Linux systems to access files and resources on remote Windows servers. The package includes various functions and modules for handling CIFS operations, including smb2_get_enc_key. This vulnerability specifically affects the smb2_get_enc_key function.

Vulnerability Detail

The smb2_get_enc_key function in the cifs package has a flaw that results in the incorrect return of an error code. This vulnerability was introduced in version v4.11 of the Linux Kernel and fixed in version v5.4.118. An attacker could potentially exploit this vulnerability to bypass security measures or cause unexpected behavior in CIFS operations. The impact and attack plausibility of this vulnerability have not been proven yet.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No specific workaround has been provided for this vulnerability.

Conclusion

The cifs package in the Linux Kernel is vulnerable to a flaw in the smb2_get_enc_key function. To mitigate this vulnerability, users should update their Linux Kernel to version v5.4.118 or later. For further support on vulnerability remediation, please contact DevNack.com.

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