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CVE-2022-50161: mtd: maps: Fix refcount leak in of_flash_probe_versatile

• 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: mtd: maps: Fix refcount leak in of_flash_probe_versatile of_find_matching_node_and_match() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.

Affected products

• Linux kernel: from 4.7 before 4.14.291; from 4.15 before 4.19.256; from 4.20 before 5.4.211; from 5.5 before 5.10.137; from 5.11 before 5.15.61; from 5.16 before 5.18.18 — fixed in 4.14.291, 4.19.256, 5.10.137, 5.15.61, 5.18.18, 5.19.2

How to fix

Upgrade to a fixed version: Linux kernel 4.14.291, 4.19.256, 5.10.137, 5.15.61. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/33ec82a6d2b119938f26e5c8040ed5d92378eb54
• https://git.kernel.org/stable/c/3c8de6a838b7e0eb392754ac89dd66e698684342
• https://git.kernel.org/stable/c/4d67c8f74d804b20febf716ec96e9a475457ec60
• https://git.kernel.org/stable/c/52ae2b14f76ef2d490337ddc0037bc37125be7b8
• https://git.kernel.org/stable/c/5d5ddd8771fa9cabeb247fba5f6ab60d63f3fbce
• https://git.kernel.org/stable/c/79e57889aa0d92a6d769bad808fb105e7b6ea495
• https://git.kernel.org/stable/c/9124d51e01232a91da4034768a2a8d1688472179
• https://git.kernel.org/stable/c/f516fbb63873ee23cba5b7c3d239677c30f13df8

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