What’s Vulnerable › Vulnerabilities

CVE-2026-45868: pinctrl: single: fix refcount leak in pcs_add_gpio_func()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-27 · updated 2026-06-25

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.

Affected products

• Linux kernel: from 3.10 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14 — fixed in 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.14, 6.19.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.252, 5.15.202, 6.1.165, 6.12.75. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/191bfd5710d6a7f48ba4315d8d3e908dcc15243c
• https://git.kernel.org/stable/c/353353309b0f7afa407df29e455f9d15b5acc296
• https://git.kernel.org/stable/c/3e3b28bb0b6ddc521a4fdd1c1ba0d35017a0796b
• https://git.kernel.org/stable/c/456a60d06c09a92680dc35fabca68024badcc28e
• https://git.kernel.org/stable/c/5b9e84d27e310f22c4ba45fedbc4f5baf43dd823
• https://git.kernel.org/stable/c/7814b1431848854b56717086e2b61bea3c59753d
• https://git.kernel.org/stable/c/99cc7352156c65201c675f750e0e77c4c73d93f5
• https://git.kernel.org/stable/c/e2e367e56bacb93ce5ac73f0b3297d5c83d38dd4

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