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CVE-2022-49377

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx blk_mq_run_hw_queues() could be run when there isn't queued request and afte…

Published Feb 26, 2025CWE-416EPSS 0.29%

Overview

CVE-2022-49377 is a high-severity vulnerability. It was published on February 26, 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:

blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx

blk_mq_run_hw_queues() could be run when there isn't queued request and

after queue is cleaned up, at that time tagset is freed, because tagset

lifetime is covered by driver, and often freed after blk_cleanup_queue()

returns.

So don't touch ->tagset for figuring out current default hctx by the mapping

built in request queue, so use-after-free on tagset can be avoided. Meantime

this way should be fast than retrieving mapping from tagset.

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/460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ffRefgit.kernel.org/stable/c/5d05426e2d5fd7df8afc866b78c36b37b00188b7Refgit.kernel.org/stable/c/70fdd922c7bf8949f8df109cf2635dff64c90392Refgit.kernel.org/stable/c/b140bac470b4f707cda59c7266214246238661df

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49377?

CVE-2022-49377 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-49377?

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-2022-49377?

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-2022-49377?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49377 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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