What’s Vulnerable › Vulnerabilities

CVE-2022-50106: powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address

• 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: powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address of_get_next_parent() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() in the error path to avoid refcount leak.

Affected products

• Linux kernel: from 2.6.23 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/00dc7cbbb558955ff410fd392cc9b0366eb06df0
• https://git.kernel.org/stable/c/02ed44125d7a7238999750ca126b60f8dd7a88b1
• https://git.kernel.org/stable/c/51cf876b11fb6ca06f69e9d1de58f892d1522e9d
• https://git.kernel.org/stable/c/5eaa93caa63abf382b319dbe2f032232026740c2
• https://git.kernel.org/stable/c/6263ec8032c411b8ef6b7f00198cb18c855ee6cb
• https://git.kernel.org/stable/c/af41cff4ada533b1cf40de6c468ba164fd32c22d
• https://git.kernel.org/stable/c/df5d4b616ee76abc97e5bd348e22659c2b095b1c
• https://git.kernel.org/stable/c/f388643657cd5a04dc47a68d85321876c5b4c208

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