CVE-2022-50887
Unknown Unknown - Not Provided
Reference Count Imbalance in Linux Kernel Regulator Causes Memory Leak

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: regulator: core: fix unbalanced of node refcount in regulator_dev_lookup() I got the the following report: OF: ERROR: memory leak, expected refcount 1 instead of 2, of_node_get()/of_node_put() unbalanced - destroy cset entry: attach overlay node /i2c/pmic@62/regulators/exten In of_get_regulator(), the node is returned from of_parse_phandle() with refcount incremented, after using it, of_node_put() need be called.
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Meta Information
Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-05-07
AI Q&A
2025-12-30
EPSS Evaluated
2026-05-05
NVD
CVE-2022-50887
EUVD
EUVD-2022-55909
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a memory leak in the Linux kernel's regulator core caused by an unbalanced reference count in the function regulator_dev_lookup(). Specifically, when a device tree node is obtained via of_parse_phandle(), its reference count is incremented, but the corresponding decrement (of_node_put()) was not properly called after use, leading to a memory leak.


How can this vulnerability impact me? :

The impact of this vulnerability is a memory leak in the kernel, which can lead to increased memory usage over time and potentially degrade system stability or performance if the leak accumulates.


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