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CVE-2022-50032: usb: renesas: Fix refcount leak bug

• Severity: medium (CVSS 5.5 v3.1)
• 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: 2025-06-18 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: usb: renesas: Fix refcount leak bug In usbhs_rza1_hardware_init(), of_find_node_by_name() will return a node pointer with refcount incremented. We should use of_node_put() when it is not used anymore.

Affected products

• Linux kernel: before 4.19.256; from 4.20 before 5.4.211; from 5.5 before 5.10.138; from 5.11 before 5.15.63; from 5.16 before 5.19.4 — fixed in 4.19.256, 5.10.138, 5.15.63, 5.19.4, 5.4.211

How to fix

Upgrade to a fixed version: Linux kernel 4.19.256, 5.10.138, 5.15.63, 5.19.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/36b18b777dece704b7c2e9e7947ca41a9b0fb009
• https://git.kernel.org/stable/c/5c4b699193eba51f1bbf462d758d66f545fddd35
• https://git.kernel.org/stable/c/9790a5a4f07f38a5add85ec58c44797d3a7c3677
• https://git.kernel.org/stable/c/9d6d5303c39b8bc182475b22f45504106a07f086
• https://git.kernel.org/stable/c/cfa8f707a58d68b2341a9dd0b33cf048f0628b4d
• https://git.kernel.org/stable/c/fbdbd61a36d887e00114321c6758e359e9573a8e

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