Description
In the Linux kernel, the following vulnerability has been resolved: net: mdiobus: fix unbalanced node reference count I got the following report while doing device(mscc-miim) load test with CONFIG_OF_UNITTEST and CONFIG_OF_DYNAMIC enabled: OF: ERROR: memory leak, expected refcount 1 instead of 2, of_node_get()/of_node_put() unbalanced - destroy cset entry: attach overlay node /spi/soc@0/mdio@7107009c/ethernet-phy@0 If the 'fwnode' is not an acpi node, the refcount is get in fwnode_mdiobus_phy_device_register(), but it has never been put when the device is freed in the normal path. So call fwnode_handle_put() in phy_device_release() to avoid leak. If it's an acpi node, it has never been get, but it's put in the error path, so call fwnode_handle_get() before phy_device_register() to keep get/put operation balanced.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
bc1bee3b87ee48bd97ef7fd306445132ba2041b0 to < 543d917f691ab06885ee779c862065899eaa4251affectedbc1bee3b87ee48bd97ef7fd306445132ba2041b0 to < 2708b357440427d6a9fee667eb7b8307f4625adcaffectedbc1bee3b87ee48bd97ef7fd306445132ba2041b0 to < cdde1560118f82498fc9e9a7c1ef7f0ef7755891affected
Linux Linux
Default version status: affected
5.14affected0 to < 5.14unaffected5.15.82 to ≤ 5.15.*unaffected6.0.12 to ≤ 6.0.*unaffected6.1 to ≤ *unaffected