Vulnerability Bulletins |
CVE-2026-43220 |
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| Affected software | LINUX KERNEL |
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In the Linux kernel, the following vulnerability has been resolved: iommu/amd: serialize sequence allocation under concurrent TLB invalidations With concurrent TLB invalidations, completion wait randomly gets timed out because cmd_sem_val was incremented outside the IOMMU spinlock, allowing CMD_COMPL_WAIT commands to be queued out of sequence and breaking the ordering assumption in wait_on_sem(). Move the cmd_sem_val increment under iommu->lock so completion sequence allocation is serialized with command queuing. And remove the unnecessary return. |
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Link: |
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| https://nvd.nist.gov/vuln/detail/CVE-2026-43220 | |