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CVE-2022-50288

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure adapter->dcb would get silently freed inside qlcnic_dcb_ena…

Published Sep 15, 2025CWE-416EPSS 0.16%

Overview

CVE-2022-50288 is a medium-severity vulnerability. It was published on September 15, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure

adapter->dcb would get silently freed inside qlcnic_dcb_enable() in

case qlcnic_dcb_attach() would return an error, which always happens

under OOM conditions. This would lead to use-after-free because both

of the existing callers invoke qlcnic_dcb_get_info() on the obtained

pointer, which is potentially freed at that point.

Propagate errors from qlcnic_dcb_enable(), and instead free the dcb

pointer at callsite using qlcnic_dcb_free(). This also removes the now

unused qlcnic_clear_dcb_ops() helper, which was a simple wrapper around

kfree() also causing memory leaks for partially initialized dcb.

Found by Linux Verification Center (linuxtesting.org) with the SVACE

static analysis tool.

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/13a7c8964afcd8ca43c0b6001ebb0127baa95362Refgit.kernel.org/stable/c/36999236f0b12d5de21a6f40e93b570727b9ceb2Refgit.kernel.org/stable/c/513787ff9a331b461115e8a145a983d650a84fcbRefgit.kernel.org/stable/c/8df1dc04ce0e4c03b51a756749c250a9cb17d707Refgit.kernel.org/stable/c/8f97eeb02a553cdc78c83a0596448a370e1518c4Refgit.kernel.org/stable/c/95df720e64a6409d8152827a776c43f615e3321aRefgit.kernel.org/stable/c/a2a694e6edbdb3efb34e1613a31fdcf6cf444a55Refgit.kernel.org/stable/c/d12a7510293d3370b234b0b7c5eda33e58786768

How CyberStrike helps

Frequently asked questions

What is CVE-2022-50288?

CVE-2022-50288 is a medium-severity vulnerability. It was published on September 15, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50288?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-50288?

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-2022-50288?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-50288 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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