PT-2026-38978 · Linux · Linux Kernel
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A locking and synchronization error exists in the USB dummy-hcd component. A race condition can occur between a USB reset and a driver unbind process. Specifically, the
stop activity() function may drop and re-acquire the dum->lock spinlock. If this occurs within set link state() after checking dum->ints enabled but before incrementing dum->callback usage, another thread performing a driver unbind can clear dum->ints enabled and dum->driver. This leads to the usb gadget udc reset() function being called with a NULL driver argument, resulting in an addressing exception and system crash.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Locking
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Weakness Enumeration
Related Identifiers
Affected Products
Linux Kernel