CVE-2026-64591

CVE CVE-2026-64591EUVD EUVD-2026-53778Published 2026-08-06T07:13:48.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Avoid WARNING in sva unbind path The Intel IOMMU driver allows SVA on devices even if they do not support PCI/PRI. Commit 39c20c4e83b9 ("iommu/vt-d: Only handle IOPF for SVA when PRI is supported") modified the SVA bind path to allow this configuration by skipping IOPF enablement when PRI is missing. However, it failed to update the unbind path. This creates an imbalance: the unbind path attempts to disable IOPF for a device that never had it enabled, triggering a WARNING in intel_iommu_disable_iopf(): WARNING: drivers/iommu/intel/iommu.c:3475 at intel_iommu_disable_iopf+0x4f/0x90d Call Trace: <TASK> blocking_domain_set_dev_pasid+0x50/0x70 iommu_detach_device_pasid+0x89/0xc0 iommu_sva_unbind_device+0x73/0x150 xe_vm_close_and_put+0x4d2/0x1200 [xe] Fix this by bypassing IOPF operations for SVA domains on non-PRI hardware in both the bind and unbind paths.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 6.18.20 <6.18.39; patch: 7.2-rc1; 46461dabb95239aa05e31e247cd21151b8406642; 39c20c4e83b9f78988541d829aa34668904e54a0 <477f8dec3b5ae54e8ef3c33bdd2257e47896512e; ee312bb1052e45cbccaf6abac1012db9ca43150a <bb354384f40bb087e7c44f0f0743a23fc945f91d; 7.0; patch: 7.1.4; patch: 0; 6.19.10 <6.20; 39c20c4e83b9f78988541d829aa34668904e54a0 <534b5f98ab7319d8004bbc7dab6481462243e883; patch: 6.18.39

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

Does this concern one of your customers?

This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.

Try it for 28 days

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.