What’s Vulnerable › Vulnerabilities

CVE-2022-49389: usb: usbip: fix a refcount leak in stub_probe()

• 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: 2025-02-26 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: usb: usbip: fix a refcount leak in stub_probe() usb_get_dev() is called in stub_device_alloc(). When stub_probe() fails after that, usb_put_dev() needs to be called to release the reference. Fix this by moving usb_put_dev() to sdev_free error path handling. Find this by code review.

Affected products

• Linux kernel: from 3.16.58 before 3.17; from 3.18.110 before 4.9.318; from 4.10 before 4.14.283; from 4.15 before 4.19.247; from 4.20 before 5.4.198; from 5.5 before 5.10.122 — fixed in 3.17, 4.14.283, 4.19.247, 4.9.318, 5.10.122, 5.15.47

How to fix

Upgrade to a fixed version: Linux kernel 3.17, 4.14.283, 4.19.247, 4.9.318. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/11c65408bd0ba1d9cd1307caa38169292de9cdfb
• https://git.kernel.org/stable/c/247d3809e45a34d9e1a3a2bb7012e31ed8b46031
• https://git.kernel.org/stable/c/2f0ae93ec33c8456cdfbf7876b80403a6318ebce
• https://git.kernel.org/stable/c/51422046be504515eb5a591adf0f424b62f46804
• https://git.kernel.org/stable/c/6bafee2f18af5e5ac125e42960bc65496d0e56a0
• https://git.kernel.org/stable/c/8afb048800919d0ab10c57983940eba956339f21
• https://git.kernel.org/stable/c/9ec4cbf1cc55d126759051acfe328d489c5d6e60
• https://git.kernel.org/stable/c/bcbb795a9e78180d74c6ab21518da87e803dfdce
• https://git.kernel.org/stable/c/f20d2d3b3364ce6525c050a8b6b4c54c8c19674d

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