Bug 2347796 (CVE-2022-49389)

Summary: CVE-2022-49389 kernel: usb: usbip: fix a refcount leak in stub_probe()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:07:03 UTC 
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.
Comment 1 Avinash Hanwate 2025-02-26 19:28:27 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022649-CVE-2022-49389-c9ca@gregkh/T