CVE-2024-46674: usb: dwc3: st: fix probed platform device ref count on probe error path

Severity: high (CVSS 7.8 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: 2024-09-13 · updated 2026-08-04
Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: st: fix probed platform device ref count on probe error path The probe function never performs any paltform device allocation, thus error path "undo_platform_dev_alloc" is entirely bogus. It drops the reference count from the platform device being probed. If error path is triggered, this will lead to unbalanced device reference counts and premature release of device resources, thus possible use-after-free when releasing remaining devm-managed resources.

Affected products

Linux kernel: from 3.18 before 4.19.321; from 4.20 before 5.4.283; from 5.5 before 5.10.225; from 5.11 before 5.15.166; from 5.16 before 6.1.108; from 6.2 before 6.6.49 — fixed in 4.19.321, 5.10.225, 5.15.166, 5.4.283, 6.1.108, 6.10.8

How to fix

Upgrade to a fixed version: Linux kernel 4.19.321, 5.10.225, 5.15.166, 5.4.283. Check the vendor advisory for mitigations.

References

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