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.
| Product | Vendor | Version |
|---|---|---|
| Linux | Linux | QAMSRV1H |
| Linux | Linux | 12.1 |
| Linux | Linux | All Modicon M340, Premium, Quantum PLCs and BMXNOR0201 |