CVE-2025-68249
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BaseFortify

Publication date: 2025-12-16

Last updated on: 2025-12-18

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: most: usb: hdm_probe: Fix calling put_device() before device initialization The early error path in hdm_probe() can jump to err_free_mdev before &mdev->dev has been initialized with device_initialize(). Calling put_device(&mdev->dev) there triggers a device core WARN and ends up invoking kref_put(&kobj->kref, kobject_release) on an uninitialized kobject. In this path the private struct was only kmalloc'ed and the intended release is effectively kfree(mdev) anyway, so free it directly instead of calling put_device() on an uninitialized device. This removes the WARNING and fixes the pre-initialization error path.
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Meta Information
Published
2025-12-16
Last Modified
2025-12-18
Generated
2026-05-06
AI Q&A
2025-12-16
EPSS Evaluated
2026-05-05
NVD
CVE-2025-68249
EUVD
EUVD-2025-203647
Affected Vendors & Products
Currently, no data is known.
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is in the Linux kernel's 'most' USB driver, specifically in the hdm_probe() function. The issue occurs because put_device() is called on a device before it has been properly initialized with device_initialize(). This leads to a device core warning and attempts to release an uninitialized kobject, which is incorrect. The fix involves directly freeing the allocated memory instead of calling put_device() on an uninitialized device, thereby removing the warning and correcting the error path.


How can this vulnerability impact me? :

The vulnerability can cause kernel warnings and potentially unstable behavior due to improper handling of device initialization and release. While it does not directly indicate a security breach, such kernel warnings and improper resource management could lead to system instability or crashes in affected USB device handling.


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