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CVE-2022-49905

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net/smc: Fix possible leaked pernet namespace in smc_init() In smc_init(), register_pernet_subsys(&smc_net_stat_ops) is called…

Published May 1, 2025CWE-401EPSS 0.21%

Overview

CVE-2022-49905 is a high-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

net/smc: Fix possible leaked pernet namespace in smc_init()

In smc_init(), register_pernet_subsys(&smc_net_stat_ops) is called

without any error handling.

If it fails, registering of &smc_net_ops won't be reverted.

And if smc_nl_init() fails, &smc_net_stat_ops itself won't be reverted.

This leaves wild ops in subsystem linkedlist and when another module

tries to call register_pernet_operations() it triggers page fault:

BUG: unable to handle page fault for address: fffffbfff81b964c

RIP: 0010:register_pernet_operations+0x1b9/0x5f0

Call Trace:

<TASK>

register_pernet_subsys+0x29/0x40

ebtables_init+0x58/0x1000 [ebtables]

...

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/61defd6450a9ef4a1487090449999b0fd83518efRefgit.kernel.org/stable/c/62ff373da2534534c55debe6c724c7fe14adb97fRefgit.kernel.org/stable/c/c97daf836f7caf81d3144b8cd2b2a51f9bc3bd09

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49905?

CVE-2022-49905 is a high-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-49905?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49905?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-49905?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49905 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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