- Vulnerability/
- CVE-2025-37812
CVE-2025-37812: usb: cdns3: Fix deadlock when using NCM gadget
First published: Thu May 08 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/stable/c/eebfb64c624fc738b669100173344fb441c5e719
- https://git.kernel.org/stable/c/59a760e4796a3cd88d8b9d7706e0a638de677751
- https://git.kernel.org/stable/c/b96239582531775f2fdcb14de29bdb6870fd4c8c
- https://git.kernel.org/stable/c/c27db84ed44e50ff90d9e3a2a25fae2e0a0fa015
- https://git.kernel.org/stable/c/48a62deb857f0694f611949015e70ad194d97159
- https://git.kernel.org/stable/c/74cd6e408a4c010e404832f0e4609d29bf1d0c41
- https://git.kernel.org/stable/c/09e90a9689a4aac7a2f726dc2aa472b0b37937b7
- https://git.kernel.org/stable/c/a1059896f2bfdcebcdc7153c3be2307ea319501f
Frequently Asked Questions
What is the severity of CVE-2025-37812?
CVE-2025-37812 has been classified as a medium severity vulnerability.
How do I fix CVE-2025-37812?
To fix CVE-2025-37812, update your Linux kernel to the latest version where the deadlock issue has been resolved.
What systems are affected by CVE-2025-37812?
CVE-2025-37812 affects systems running the Linux kernel that utilize the cdns3 driver.
What type of vulnerability is CVE-2025-37812?
CVE-2025-37812 is a deadlock vulnerability in the USB subsystem of the Linux kernel.
Can CVE-2025-37812 be exploited remotely?
CVE-2025-37812 does not describe a vulnerability that can be easily exploited remotely; it primarily affects local usage of the NCM gadget.
- collector/mitre-cve
- source/MITRE
- agent/title
- agent/references
- agent/type
- agent/description
- agent/first-publish-date
- agent/author
- agent/source
- agent/event
- agent/softwarecombine
- agent/tags
- collector/nvd-api
- source/NVD
- agent/last-modified-date
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/linux
- canonical/linux kernel