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CVE-2025-39807

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Add error handling for old state CRTC in atomic_disable Introduce error handling to address an issue where, after…

Published Sep 16, 2025CWE-476EPSS 0.16%

Overview

CVE-2025-39807 is a medium-severity vulnerability. It was published on September 16, 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 error handling for old state CRTC in atomic_disable

Introduce error handling to address an issue where, after a hotplug

event, the cursor continues to update. This situation can lead to a

kernel panic due to accessing the NULL `old_state->crtc`.

E,g.

Unable to handle kernel NULL pointer dereference at virtual address

Call trace:

mtk_crtc_plane_disable+0x24/0x140

mtk_plane_atomic_update+0x8c/0xa8

drm_atomic_helper_commit_planes+0x114/0x2c8

drm_atomic_helper_commit_tail_rpm+0x4c/0x158

commit_tail+0xa0/0x168

drm_atomic_helper_commit+0x110/0x120

drm_atomic_commit+0x8c/0xe0

drm_atomic_helper_update_plane+0xd4/0x128

__setplane_atomic+0xcc/0x110

drm_mode_cursor_common+0x250/0x440

drm_mode_cursor_ioctl+0x44/0x70

drm_ioctl+0x264/0x5d8

__arm64_sys_ioctl+0xd8/0x510

invoke_syscall+0x6c/0xe0

do_el0_svc+0x68/0xe8

el0_svc+0x34/0x60

el0t_64_sync_handler+0x1c/0xf8

el0t_64_sync+0x180/0x188

Adding

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/0c6b24d70da21201ed009a2aca740d2dfddc7ab5Refgit.kernel.org/stable/c/7d5cc22efa44e0fe321ce195c71c3d7da211fbb2Refgit.kernel.org/stable/c/9a94e9d8b50bcfe89693bc899a54d3866d86e973

How CyberStrike helps

Frequently asked questions

What is CVE-2025-39807?

CVE-2025-39807 is a medium-severity vulnerability. It was published on September 16, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-39807?

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-2025-39807?

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-2025-39807?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-39807 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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