CVE-2024-36959: pinctrl: devicetree: fix refcount leak in pinctrl_dt_to_map()

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-30 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: pinctrl: devicetree: fix refcount leak in pinctrl_dt_to_map() If we fail to allocate propname buffer, we need to drop the reference count we just took. Because the pinctrl_dt_free_maps() includes the droping operation, here we call it directly.

Affected products

Linux kernel: from 4.9.334 before 4.10; from 4.14.300 before 4.15; from 4.19.267 before 4.19.314; from 5.4.225 before 5.4.276; from 5.10.156 before 5.10.217; from 5.15.80 before 5.15.159 — fixed in 4.10, 4.15, 4.19.314, 5.10.217, 5.15.159, 5.4.276

How to fix

Upgrade to a fixed version: Linux kernel 4.10, 4.15, 4.19.314, 5.10.217. Check the vendor advisory for mitigations.

References

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