CVE-2026-23426
Device Node Reference Leak in Linux drm/logicvc Component
Publication date: 2026-04-03
Last updated on: 2026-04-23
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| 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) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
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.
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.