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CVE-2022-49346: net: dsa: lantiq_gswip: Fix refcount leak in gswip_gphy_fw_list

• 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: net: dsa: lantiq_gswip: Fix refcount leak in gswip_gphy_fw_list 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 gphy_fw_np. Add missing of_node_put() to avoid refcount leak.

Affected products

• Linux kernel: from 4.20 before 5.4.198; from 5.5 before 5.10.122; from 5.11 before 5.15.47; from 5.16 before 5.17.15; from 5.18 before 5.18.4; 5.19-rc1 — fixed in 5.10.122, 5.15.47, 5.17.15, 5.18.4, 5.4.198

How to fix

Upgrade to a fixed version: Linux kernel 5.10.122, 5.15.47, 5.17.15, 5.18.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0737e018a05e2aa352828c52bdeed3b02cff2930
• https://git.kernel.org/stable/c/2e007ac6fa7c9c94ad84da075c5c504afad690a0
• https://git.kernel.org/stable/c/32cd78c5610f02a929f63cac985e73692d05f33e
• https://git.kernel.org/stable/c/54d6802c4d83fa8de7696cfec06f475d5fd92d27
• https://git.kernel.org/stable/c/7c8df6fad43d9d5d77f281f794b2a93cd02fd1a9
• https://git.kernel.org/stable/c/c2ae49a113a5344232f1ebb93bcf18bbd11e9c39

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