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CVE-2022-50197: cpufreq: zynq: Fix refcount leak in zynq_get_revision

• 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: cpufreq: zynq: Fix refcount leak in zynq_get_revision of_find_compatible_node() returns a node pointer with refcount incremented, we should use of_node_put() on it when done. Add missing of_node_put() to avoid refcount leak.

Affected products

• Linux kernel: from 3.16 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/179034fb108e3655142f2af0c309cef171c34d68
• https://git.kernel.org/stable/c/22e6d8bcde8e66b64f46bf9bd2d3d0f88d40c39f
• https://git.kernel.org/stable/c/3b01353f1825151a29d08e0868b2bf01e1116ab5
• https://git.kernel.org/stable/c/a530fa52d4fdffc5f010f90c05ac63019b8ff5f8
• https://git.kernel.org/stable/c/d1ff2559cef0f6f8d97fba6337b28adb10689e16
• https://git.kernel.org/stable/c/dcbb974254d2a27240c2e50185afdde90f923feb
• https://git.kernel.org/stable/c/ecefd22d5db7ccb8bec2646e5d25e058fc33162a
• https://git.kernel.org/stable/c/f52c9be1779d70037ae300762d19b08fe3656237

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