CVE-2026-23426
Received Received - Intake
Device Node Reference Leak in Linux drm/logicvc Component

Publication date: 2026-04-03

Last updated on: 2026-04-23

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/logicvc: Fix device node reference leak in logicvc_drm_config_parse() The logicvc_drm_config_parse() function calls of_get_child_by_name() to find the "layers" node but fails to release the reference, leading to a device node reference leak. Fix this by using the __free(device_node) cleanup attribute to automatic release the reference when the variable goes out of scope.
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Meta Information
Published
2026-04-03
Last Modified
2026-04-23
Generated
2026-06-16
AI Q&A
2026-04-03
EPSS Evaluated
2026-06-15
NVD
CVE-2026-23426
EUVD
EUVD-2026-18650
Affected Vendors & Products
Showing 13 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.0
linux linux_kernel From 6.19 (inc) to 6.19.7 (exc)
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel From 6.13 (inc) to 6.18.17 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.130 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.77 (exc)
linux linux_kernel From 6.0.1 (inc) to 6.1.167 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a device node reference leak in the Linux kernel's drm/logicvc component. Specifically, the function logicvc_drm_config_parse() calls of_get_child_by_name() to find a "layers" node but fails to release the reference properly. This leads to a leak of the device node reference.

The issue was fixed by using the __free(device_node) cleanup attribute, which automatically releases the reference when the variable goes out of scope.

Impact Analysis

This vulnerability causes a device node reference leak in the Linux kernel's drm/logicvc component due to the logicvc_drm_config_parse() function failing to release a reference properly.

Such a reference leak can lead to resource exhaustion over time, potentially degrading system performance or stability.

Mitigation Strategies

The vulnerability is fixed by updating the Linux kernel to a version where the logicvc_drm_config_parse() function properly releases the device node reference by using the __free(device_node) cleanup attribute.

Therefore, the immediate mitigation step is to apply the patch or update your Linux kernel to the fixed version published on or after 2026-04-03.

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