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CVE-2022-49506

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Add vblank register/unregister callback functions We encountered a kernel panic issue that callback data will be…

Published Feb 26, 2025EPSS 0.26%

Overview

CVE-2022-49506 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:

drm/mediatek: Add vblank register/unregister callback functions

We encountered a kernel panic issue that callback data will be NULL when

it's using in ovl irq handler. There is a timing issue between

mtk_disp_ovl_irq_handler() and mtk_ovl_disable_vblank().

To resolve this issue, we use the flow to register/unregister vblank cb:

- Register callback function and callback data when crtc creates.

- Unregister callback function and callback data when crtc destroies.

With this solution, we can assure callback data will not be NULL when

vblank is disable.

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/3a4027b5971fe2a94e32754f007d9d3c12c68ad1Refgit.kernel.org/stable/c/8a265d9838bc3c63579002d55c2b2c655c4f8f26Refgit.kernel.org/stable/c/8a2dbdeccef6de47565638abdf3c25f41cdffc37Refgit.kernel.org/stable/c/b74d921b900b6ce38c6247c0a1c86be9f3746493

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49506?

CVE-2022-49506 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-2022-49506?

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-2022-49506?

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-2022-49506?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49506 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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