CVE-2026-45868
pinctrl: single: fix refcount leak in pcs_add_gpio_func()
Description
In the Linux kernel, the following vulnerability has been resolved: pinctrl: single: fix refcount leak in pcs_add_gpio_func() of_parse_phandle_with_args() returns a device_node pointer with refcount incremented in gpiospec.np. The loop iterates through all phandles but never releases the reference, causing a refcount leak on each iteration. Add of_node_put() calls to release the reference after extracting the needed arguments and on the error path when devm_kzalloc() fails. This bug was detected by our static analysis tool and verified by my code review.
INFO
Published Date :
May 27, 2026, 2:17 p.m.
Last Modified :
May 27, 2026, 2:48 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the provided kernel patch.
- Ensure reference counts are managed correctly.
- Review static analysis findings regularly.
References to Advisories, Solutions, and Tools
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CVE-2026-45868.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45868 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45868
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following table lists the changes that have been made to the
CVE-2026-45868 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 27, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: pinctrl: single: fix refcount leak in pcs_add_gpio_func() of_parse_phandle_with_args() returns a device_node pointer with refcount incremented in gpiospec.np. The loop iterates through all phandles but never releases the reference, causing a refcount leak on each iteration. Add of_node_put() calls to release the reference after extracting the needed arguments and on the error path when devm_kzalloc() fails. This bug was detected by our static analysis tool and verified by my code review. Added Reference https://git.kernel.org/stable/c/191bfd5710d6a7f48ba4315d8d3e908dcc15243c Added Reference https://git.kernel.org/stable/c/353353309b0f7afa407df29e455f9d15b5acc296 Added Reference https://git.kernel.org/stable/c/3e3b28bb0b6ddc521a4fdd1c1ba0d35017a0796b Added Reference https://git.kernel.org/stable/c/456a60d06c09a92680dc35fabca68024badcc28e Added Reference https://git.kernel.org/stable/c/5b9e84d27e310f22c4ba45fedbc4f5baf43dd823 Added Reference https://git.kernel.org/stable/c/7814b1431848854b56717086e2b61bea3c59753d Added Reference https://git.kernel.org/stable/c/99cc7352156c65201c675f750e0e77c4c73d93f5 Added Reference https://git.kernel.org/stable/c/e2e367e56bacb93ce5ac73f0b3297d5c83d38dd4