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CVE-2022-49931

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Correctly move list in sc_disable() Commit 13bac861952a ("IB/hfi1: Fix abba locking issue with sc_disable()") incorrec…

Published May 1, 2025CWE-476EPSS 0.24%

Overview

CVE-2022-49931 is a high-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

IB/hfi1: Correctly move list in sc_disable()

Commit 13bac861952a ("IB/hfi1: Fix abba locking issue with sc_disable()")

incorrectly tries to move a list from one list head to another. The

result is a kernel crash.

The crash is triggered when a link goes down and there are waiters for a

send to complete. The following signature is seen:

BUG: kernel NULL pointer dereference, address: 0000000000000030

[...]

Call Trace:

sc_disable+0x1ba/0x240 [hfi1]

pio_freeze+0x3d/0x60 [hfi1]

handle_freeze+0x27/0x1b0 [hfi1]

process_one_work+0x1b0/0x380

? process_one_work+0x380/0x380

worker_thread+0x30/0x360

? process_one_work+0x380/0x380

kthread+0xd7/0x100

? kthread_complete_and_exit+0x20/0x20

ret_from_fork+0x1f/0x30

The fix is to use the correct call to move the list.

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/1afac08b39d85437187bb2a92d89a741b1078f55Refgit.kernel.org/stable/c/25760a41e3802f54aadcc31385543665ab349b8eRefgit.kernel.org/stable/c/7c4260f8f188df32414a5ecad63e8b934c2aa3f0Refgit.kernel.org/stable/c/b8bcff99b07cc175a6ee12a52db51cdd2229586cRefgit.kernel.org/stable/c/ba95409d6b580501ff6d78efd00064f7df669926

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49931?

CVE-2022-49931 is a high-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2022-49931?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-49931?

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-2022-49931?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49931 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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