CVE-2025-37812
usb: cdns3: Fix deadlock when using NCM gadget
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usb: cdns3: Fix deadlock when using NCM gadget
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.
Reserved 2025-04-16 | Published 2025-05-08 | Updated 2025-05-26 | Assigner Linuxgit.kernel.org/...c/eebfb64c624fc738b669100173344fb441c5e719
git.kernel.org/...c/59a760e4796a3cd88d8b9d7706e0a638de677751
git.kernel.org/...c/b96239582531775f2fdcb14de29bdb6870fd4c8c
git.kernel.org/...c/c27db84ed44e50ff90d9e3a2a25fae2e0a0fa015
git.kernel.org/...c/48a62deb857f0694f611949015e70ad194d97159
git.kernel.org/...c/74cd6e408a4c010e404832f0e4609d29bf1d0c41
git.kernel.org/...c/09e90a9689a4aac7a2f726dc2aa472b0b37937b7
git.kernel.org/...c/a1059896f2bfdcebcdc7153c3be2307ea319501f
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