CVE-2025-38094 – Cirrus Logic Macb Deadlock Vulnerability

CVE ID : CVE-2025-38094

Published : July 3, 2025, 8:15 a.m. | 39 minutes ago

Description : In the Linux kernel, the following vulnerability has been resolved:

net: cadence: macb: Fix a possible deadlock in macb_halt_tx.

There is a situation where after THALT is set high, TGO stays high as
well. Because jiffies are never updated, as we are in a context with
interrupts disabled, we never exit that loop and have a deadlock.

That deadlock was noticed on a sama5d4 device that stayed locked for days.

Use retries instead of jiffies so that the timeout really works and we do
not have a deadlock anymore.

Severity: 0.0 | NA

Visit the link for more details, such as CVSS details, affected products, timeline, and more…