net/smc: Fix NULL pointer dereference in smc_pnet_find_ib()

Kernel Updated 02 Oct 2025

Summary

24/04/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1001959: net/smc: Fix NULL pointer dereference in smc_pnet_find_ib(). Affects Kernel versions >= af5f60c7e3d593c2fa31b9a62c16eae75f074de3, < 35b91e49bc80ca944a8679c3b139ddaf2f8eea0f. 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 allows for efficient communication between systems. The smc_pnet_find_ib() function is responsible for finding the InfiniBand (IB) device associated with a given SMC PNET ID. However, a vulnerability in this function can lead to a NULL pointer dereference.

Vulnerability Detail

The vulnerability in smc_pnet_find_ib() arises from a failure to handle a NULL pointer properly. An attacker could exploit this vulnerability by providing a crafted input that triggers the NULL pointer dereference, leading to a system crash or potential privilege escalation. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability was introduced in Linux Kernel version v5.1 and has been fixed in version v5.10.112.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No workaround has been provided for this vulnerability.

Conclusion

The vulnerability in smc_pnet_find_ib() can lead to a NULL pointer dereference, potentially resulting in a system crash or privilege escalation. It is recommended to update the Linux Kernel to version v5.10.112 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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