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CVE-2022-50121: remoteproc: k3-r5: Fix refcount leak in k3_r5_cluster_of_init

• 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: remoteproc: k3-r5: Fix refcount leak in k3_r5_cluster_of_init Every iteration of for_each_available_child_of_node() decrements the reference count of the previous node. When breaking early from a for_each_available_child_of_node() loop, we need to explicitly call of_node_put() on the child node. Add missing of_node_put() to avoid refcount leak.

Affected products

• Linux kernel: from 5.10 before 5.10.137; from 5.11 before 5.15.61; from 5.16 before 5.18.18; from 5.19 before 5.19.2 — fixed in 5.10.137, 5.15.61, 5.18.18, 5.19.2

How to fix

Upgrade to a fixed version: Linux kernel 5.10.137, 5.15.61, 5.18.18, 5.19.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3f83c4cf1b78331c23876977aa7b9151aff2f9e1
• https://git.kernel.org/stable/c/61cd8cd3b6b33c7eae3b45cf783b114f2ae53528
• https://git.kernel.org/stable/c/75358732af9b26acfe3e609943290bcba13330fc
• https://git.kernel.org/stable/c/cf112a52d758092ca3d5ebdad51dd17bda5ba3e5
• https://git.kernel.org/stable/c/fa220c05d282e7479abe08b54e3bdffd06c25e97

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