CVE-2026-43253

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> iommu/amd: move wait_on_sem() out of spinlock<br /> <br /> With iommu.strict=1, the existing completion wait path can cause soft<br /> lockups under stressed environment, as wait_on_sem() busy-waits under the<br /> spinlock with interrupts disabled.<br /> <br /> Move the completion wait in iommu_completion_wait() out of the spinlock.<br /> wait_on_sem() only polls the hardware-updated cmd_sem and does not require<br /> iommu-&gt;lock, so holding the lock during the busy wait unnecessarily<br /> increases contention and extends the time with interrupts disabled.