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CVE-2026-43253

גבוהה 7.5

תיאור (מקור, אנגלית)

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 the completion wait in iommu_completion_wait() out of the spinlock. wait_on_sem() only polls the hardware-updated cmd_sem and does not require iommu->lock, so holding the lock during the busy wait unnecessarily increases contention and extends the time with interrupts disabled.

מדדים

CVSS 3.1
7.5 (HIGH) מקור הציון: CNA CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — סבירות ניצול
0% (אחוזון 000) נכון ל-1/8/2026
CWE
CWE-667

מוצרים מושפעים

linux: linux kernel

קישורים