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CVE-2022-49492

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags In nvme_alloc_admin_tags, the admin_q can be set to an error…

Published Feb 26, 2025CWE-476EPSS 0.29%

Overview

CVE-2022-49492 is a medium-severity vulnerability. It was published on February 26, 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:

nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags

In nvme_alloc_admin_tags, the admin_q can be set to an error (typically

-ENOMEM) if the blk_mq_init_queue call fails to set up the queue, which

is checked immediately after the call. However, when we return the error

message up the stack, to nvme_reset_work the error takes us to

nvme_remove_dead_ctrl()

nvme_dev_disable()

nvme_suspend_queue(&dev->queues[0]).

Here, we only check that the admin_q is non-NULL, rather than not

an error or NULL, and begin quiescing a queue that never existed, leading

to bad / NULL pointer dereference.

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/54a4c1e47d1b2585e74920399455bd9abbfb2bd7Refgit.kernel.org/stable/c/7a28556082d1fbcbc599baf1c24252dfc73efefcRefgit.kernel.org/stable/c/8321b17789f614414206af07e17ce4751c95dc76Refgit.kernel.org/stable/c/8da2b7bdb47e94bbc4062a3978c708926bcb022cRefgit.kernel.org/stable/c/906c81dba8ee8057523859b5e1a2479e9fd34860Refgit.kernel.org/stable/c/9e649471b396fa0139d53919354ce1eace9b9a24Refgit.kernel.org/stable/c/af98940dd33c9f9e1beb4f71c0a39260100e2a65Refgit.kernel.org/stable/c/da42761181627e9bdc37d18368b827948a583929Refgit.kernel.org/stable/c/f76729662650cd7bc8f8194e057af381370349a7

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49492?

CVE-2022-49492 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49492?

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-2022-49492?

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-2022-49492?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49492 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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