CVE-2025-37812

Published: May 9, 2025Last modified: May 9, 2025

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.

Status

References

• https://git.kernel.org/stable/c/09e90a9689a4aac7a2f726dc2aa472b0b37937b7
• https://git.kernel.org/stable/c/48a62deb857f0694f611949015e70ad194d97159
• https://git.kernel.org/stable/c/59a760e4796a3cd88d8b9d7706e0a638de677751
• https://git.kernel.org/stable/c/74cd6e408a4c010e404832f0e4609d29bf1d0c41
• https://git.kernel.org/stable/c/a1059896f2bfdcebcdc7153c3be2307ea319501f
• https://git.kernel.org/stable/c/b96239582531775f2fdcb14de29bdb6870fd4c8c
• https://git.kernel.org/stable/c/c27db84ed44e50ff90d9e3a2a25fae2e0a0fa015
• https://git.kernel.org/stable/c/eebfb64c624fc738b669100173344fb441c5e719