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CVE-2022-49677: ARM: cns3xxx: Fix refcount leak in cns3xxx_init

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: ARM: cns3xxx: Fix refcount leak in cns3xxx_init 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 3.10 before 4.9.321; from 4.10 before 4.14.286; from 4.15 before 4.19.250; from 4.20 before 5.4.202; from 5.5 before 5.10.127; from 5.11 before 5.15.51 — fixed in 4.14.286, 4.19.250, 4.9.321, 5.10.127, 5.15.51, 5.18.8

How to fix

Upgrade to a fixed version: Linux kernel 4.14.286, 4.19.250, 4.9.321, 5.10.127. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1ba904b6b16e08de5aed7c1349838d9cd0d178c5
• https://git.kernel.org/stable/c/45bebbc8cea7d586a6216dc62814bdb380b9b29b
• https://git.kernel.org/stable/c/68d4303bf59662b64bd555e2aa0518282d20aa4f
• https://git.kernel.org/stable/c/b8b84e01ca94e2e1f5492353e9c24dab520b2e5b
• https://git.kernel.org/stable/c/c980392af1473d6d5662f70d8089c8e6d85144a4
• https://git.kernel.org/stable/c/d1359e4129ad43e43972a28838b87291c51de23d
• https://git.kernel.org/stable/c/da3ee7cd2f15922ad88a7ca6deee2eafdc7cd214
• https://git.kernel.org/stable/c/dc5170aae24e04068fd5ea125d06c0ab51f48a27

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