What’s Vulnerable › Vulnerabilities

CVE-2022-50157: PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains()

• 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: PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains() of_get_next_child() returns a node pointer with refcount incremented, so we should use of_node_put() on it when we don't need it anymore. mc_pcie_init_irq_domains() only calls of_node_put() in the normal path, missing it in some error paths. Add missing of_node_put() to avoid refcount leak.

Affected products

• Linux kernel: from 5.12 before 5.15.61; from 5.16 before 5.18.18; from 5.19 before 5.19.2 — fixed in 5.15.61, 5.18.18, 5.19.2

How to fix

Upgrade to a fixed version: Linux kernel 5.15.61, 5.18.18, 5.19.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/6cd5f93b5c6a66c68a91dbc604a78207252ecd43
• https://git.kernel.org/stable/c/880ece912b958a0c92cc0baa8e906fb9b49a4b53
• https://git.kernel.org/stable/c/c0ad5c7e68d10f6f8ffb0f4329e3c19404fbca58
• https://git.kernel.org/stable/c/f030304fdeb87ec8f1b518c73703214aec6cc24a

Get alerted when CVE-2022-50157 or the next vulnerability affects your stack