net/smc: Fix wrong list_del in smc_lgr_cleanup_early

Kernel Updated 02 Oct 2025

Summary

19/12/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1002497: net/smc: fix wrong list_del in smc_lgr_cleanup_early. Affects Kernel versions >= a0a62ee15a829ebf8aeec55a4f1688230439b3e0, < 77731fede297a23d26f2d169b4269466b2c82529. No fix is published. How to fix ↓

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Background

The net/smc package is a part of the Linux Kernel ecosystem. It provides support for the SMC (System Management Controller) protocol, which is used for communication between systems in a cluster. The smc_lgr_cleanup_early function in this package is responsible for cleaning up resources during the early stages of SMC logical group removal.

Vulnerability Detail

The vulnerability identified as GSD-2021-1002497 in the net/smc package involves a wrong list_del operation in the smc_lgr_cleanup_early function. This issue was introduced in version v5.5 of the Linux Kernel and fixed in version v5.10.84. The incorrect list_del operation can lead to potential security vulnerabilities, although the actual impact and attack plausibility have not been proven yet. Further details can be found in the references link provided.

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 v5.10.84 or later. This update includes the commit 77731fede297a23d26f2d169b4269466b2c82529, which addresses the issue. Updating the Kernel will ensure that the incorrect list_del operation is corrected and the potential security vulnerabilities are mitigated.

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Conclusion

In conclusion, the net/smc package in the Linux Kernel was found to have a vulnerability related to a wrong list_del operation in the smc_lgr_cleanup_early function. To mitigate this vulnerability, it is advised to update the Kernel to version v5.10.84 or later. For further support on vulnerability remediation, you can reach out to DevNack.com.

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