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CVE-2026-23426: drm/logicvc: Fix device node reference leak in logicvc_drm_config_parse()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-03 · updated 2026-07-24

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.

Affected products

• Linux kernel: from 6.0.1 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.77; from 6.13 before 6.18.17; from 6.19 before 6.19.7; 6.0, 7.0-rc1, 7.0-rc2, 7.0-rc3, 7.0-rc4, 7.0-rc5 (+2) — fixed in 6.1.167, 6.12.77, 6.18.17, 6.19.7, 6.6.130

How to fix

Upgrade to a fixed version: Linux kernel 6.1.167, 6.12.77, 6.18.17, 6.19.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0bd326dffd9e103335d77d9c31275c0d5a7979eb
• https://git.kernel.org/stable/c/78e91e49d28e05ccaa6b445bafb5e367d57c9583
• https://git.kernel.org/stable/c/871630255ecd2d9b64ad1d75a7dfc0567d7d9989
• https://git.kernel.org/stable/c/b88f49910be147b7974098b9172b0d3873142d6a
• https://git.kernel.org/stable/c/f8a6eba20edb938166b26e133cc61306e1bc6de9
• https://git.kernel.org/stable/c/fef0e649f8b42bdffe4a916dd46e1b1e9ad2f207

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