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CVE-2022-49711

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove() In fsl_mc_bus_remove(), mc->root_mc_bus_dev->mc_io is passed t…

Published Feb 26, 2025CWE-416EPSS 0.27%

Overview

CVE-2022-49711 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:

bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()

In fsl_mc_bus_remove(), mc->root_mc_bus_dev->mc_io is passed to

fsl_destroy_mc_io(). However, mc->root_mc_bus_dev is already freed in

fsl_mc_device_remove(). Then reference to mc->root_mc_bus_dev->mc_io

triggers KASAN use-after-free. To avoid the use-after-free, keep the

reference to mc->root_mc_bus_dev->mc_io in a local variable and pass to

fsl_destroy_mc_io().

This patch needs rework to apply to kernels older than v5.15.

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/161b68b0a728377aaa10a8e14c70e7734f3c9ff7Refgit.kernel.org/stable/c/720ab105df7bf3eee62d2bddd41526b29d07d045Refgit.kernel.org/stable/c/928ea98252ad75118950941683893cf904541da9Refgit.kernel.org/stable/c/ccd1751092341ac120a961835211f9f2e3735963

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49711?

CVE-2022-49711 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-2022-49711?

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-2022-49711?

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-2022-49711?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49711 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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