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

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

https://cvefeed.io/rssfeed/latest.atom / Thu, 05/08/2025 - 11:39
CVE ID : CVE-2025-37812
Published : May 8, 2025, 7:15 a.m. | 57 minutes ago
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.
Severity: 0.0 | NA
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