CVE-2026-43253
MediumSummary
A vulnerability in the Linux kernel has been resolved by moving the wait_on_sem() function out of the spinlock. The issue occurred with iommu.strict=1, potentially leading to system lockups under high load conditions.
Risk Assessment
This vulnerability may lead to system lockups during critical moments, affecting service availability within the organization. Specifically, in high-load environments, the risk of soft lockups is increased.
Recommendation
It is recommended to update the Linux kernel to the latest version to eliminate this vulnerability. Additionally, monitoring the system under high load conditions may help in early detection of issues.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: move wait_on_sem() out of spinlock With iommu.strict=1, the existing completion wait path can cause soft lockups under stressed environment, as wait_on_sem() busy-waits under the spinlock with interrupts disabled. Move