Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.14, < 5.15.82 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/2708b357440427d6a9fee667eb7b8307f4625adcPatch
- https://git.kernel.org/stable/c/543d917f691ab06885ee779c862065899eaa4251Patch
- https://git.kernel.org/stable/c/cdde1560118f82498fc9e9a7c1ef7f0ef7755891Patch
FAQ
What is CVE-2022-49016?
CVE-2022-49016 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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_O...
How severe is CVE-2022-49016?
CVE-2022-49016 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49016?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.