CVE-2022-49389: usb: usbip: fix a refcount leak in stub_probe()
First published: Wed Feb 26 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=3.16.58<3.17 | |
| Linux Kernel | >=3.18.110<4.9.318 | |
| Linux Kernel | >=4.10<4.14.283 | |
| Linux Kernel | >=4.15<4.19.247 | |
| Linux Kernel | >=4.20<5.4.198 | |
| Linux Kernel | >=5.5<5.10.122 | |
| Linux Kernel | >=5.11<5.15.47 | |
| Linux Kernel | >=5.16<5.17.15 | |
| Linux Kernel | >=5.18<5.18.4 |
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Reference Links
- https://git.kernel.org/stable/c/6bafee2f18af5e5ac125e42960bc65496d0e56a0
- https://git.kernel.org/stable/c/f20d2d3b3364ce6525c050a8b6b4c54c8c19674d
- https://git.kernel.org/stable/c/247d3809e45a34d9e1a3a2bb7012e31ed8b46031
- https://git.kernel.org/stable/c/2f0ae93ec33c8456cdfbf7876b80403a6318ebce
- https://git.kernel.org/stable/c/bcbb795a9e78180d74c6ab21518da87e803dfdce
- https://git.kernel.org/stable/c/51422046be504515eb5a591adf0f424b62f46804
- https://git.kernel.org/stable/c/8afb048800919d0ab10c57983940eba956339f21
- https://git.kernel.org/stable/c/11c65408bd0ba1d9cd1307caa38169292de9cdfb
- https://git.kernel.org/stable/c/9ec4cbf1cc55d126759051acfe328d489c5d6e60
Frequently Asked Questions
What is the severity of CVE-2022-49389?
CVE-2022-49389 is classified as a moderate severity vulnerability in the Linux kernel.
How do I fix CVE-2022-49389?
To fix CVE-2022-49389, update the Linux kernel to a version that includes the patches addressing this vulnerability.
Which versions of the Linux kernel are affected by CVE-2022-49389?
CVE-2022-49389 affects multiple versions of the Linux kernel between 3.16 and 5.18.
What type of vulnerability is CVE-2022-49389?
CVE-2022-49389 is a refcount leak vulnerability related to USB device handling in the Linux kernel.
What are the potential impacts of CVE-2022-49389?
Exploitation of CVE-2022-49389 could lead to resource leaks and denial of service in systems using vulnerable Linux kernel versions.
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