CVE-2023-53757: irqchip/irq-mvebu-gicp: Fix refcount leak in mvebu_gicp_probe

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-08 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: irqchip/irq-mvebu-gicp: Fix refcount leak in mvebu_gicp_probe of_irq_find_parent() returns a node pointer with refcount incremented, We should use of_node_put() on it when not needed anymore. Add missing of_node_put() to avoid refcount leak.

Affected products

Linux kernel: 4.13 — fixed in 6.3

How to fix

Upgrade to a fixed version: Linux kernel 6.3. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/4545d7a70ce0fc78b1d3c33c4a0939a86f363b57
https://git.kernel.org/stable/c/88cb93d3a16f706bd7213f8a5882c394e5d10c4e
https://git.kernel.org/stable/c/91e149b201bdb68c77011d50d011e47fadbcc8bd
https://git.kernel.org/stable/c/9419e700021a393f67be36abd0c4f3acc6139041
https://git.kernel.org/stable/c/bb755e020abc24793b9411c9419ed43f07f9a03d
https://git.kernel.org/stable/c/c7d78d36e19eeb74a1c12799fbadbcdbaf36c0bd
https://git.kernel.org/stable/c/cee12e8be8e227731a845ae43a4c9ce2e404be45
https://git.kernel.org/stable/c/d6b99b9b5e354f9c801a3cc3b1d4881d920e1718

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