In the Linux kernel, the following vulnerability has been resolved:
iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap
Sashiko pointed out that the driver could drop PAGE_SIZE from the pgsize_bitmap. That is technically allowed but nothing does it, and such an iommu_domain would not be used with the DMA API today.
Still, it is against the design and it is trivial to fix up. Lift the PT_WARN_ON to the if branch and just skip the fast path.
CVSS Details
- CVSS 3.1 Base Score: 8.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | Upgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-7.0.0-1010-azureUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-oracleUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-aws-64kUpgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-aws-7.0Upgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-nvidia-bosUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-awsUpgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-raspi-7.0Upgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-aws-64k-7.0Upgrade linux-image-gcp-64kUpgrade linux-image-gcpUpgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-azure-7.0Upgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-ibm-7.0Upgrade linux-image-nvidiaUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-nvidia-7.0Upgrade linux-image-oracle-64k-7.0Upgrade linux-image-raspi-realtimeUpgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-raspiUpgrade linux-image-ibmUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-oracle-64kUpgrade linux-image-7.0.0-1009-awsUpgrade linux-image-azure-fdeUpgrade linux-image-gcp-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-azure-fde-7.0Upgrade linux-image-azure | Jul 21, 2026 | Jul 20, 2026 |
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