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CVE-2025-37812 – Linux Kernel USB cdns3 NCM Gadget Deadlock

The following table lists the changes that have been made to the
CVE-2025-37812 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 08, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved:

    usb: cdns3: Fix deadlock when using NCM gadget

    The cdns3 driver has the same NCM deadlock as fixed in cdnsp by commit
    58f2fcb3a845 (“usb: cdnsp: Fix deadlock issue during using NCM gadget”).

    Under PREEMPT_RT the deadlock can be readily triggered by heavy network
    traffic, for example using “iperf –bidir” over NCM ethernet link.

    The deadlock occurs because the threaded interrupt handler gets
    preempted by a softirq, but both are protected by the same spinlock.
    Prevent deadlock by disabling softirq during threaded irq handler.
    Added Reference https://git.kernel.org/stable/c/09e90a9689a4aac7a2f726dc2aa472b0b37937b7
    Added Reference https://git.kernel.org/stable/c/48a62deb857f0694f611949015e70ad194d97159
    Added Reference https://git.kernel.org/stable/c/59a760e4796a3cd88d8b9d7706e0a638de677751
    Added Reference https://git.kernel.org/stable/c/74cd6e408a4c010e404832f0e4609d29bf1d0c41
    Added Reference https://git.kernel.org/stable/c/a1059896f2bfdcebcdc7153c3be2307ea319501f
    Added Reference https://git.kernel.org/stable/c/b96239582531775f2fdcb14de29bdb6870fd4c8c
    Added Reference https://git.kernel.org/stable/c/c27db84ed44e50ff90d9e3a2a25fae2e0a0fa015
    Added Reference https://git.kernel.org/stable/c/eebfb64c624fc738b669100173344fb441c5e719
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