In the Linux kernel, the following vulnerability has been resolved:
iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path
In iommu_dma_map_sg(), when handling PCI P2PDMA cases, the DMA length of the current scatterlist segment `s` is incorrectly assigned from the head entry `sg->length` instead of the current entry `s->length`.
This typo causes all P2PDMA segments in the scatterlist to inherit the length of the first segment, leading to corrupted DMA lengths for multi- segment scatterlists.
Fix this by using `s->length` instead of `sg->length`.
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redhat_linux | — | No solution exists | Aug 24, 2026 | Aug 15, 2026 |
| Ubuntu | — | Upgrade linux-image-gke-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-genericUpgrade linux-image-7.0.0-38-realtimeUpgrade linux-image-aws-64k-7.0Upgrade linux-image-azure-fde-7.0Upgrade linux-image-7.0.0-1017-azureUpgrade linux-image-virtual-7.0Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-generic-64kUpgrade linux-image-realtime-7.0Upgrade linux-image-virtualUpgrade linux-image-7.0.0-1013-oracle-64kUpgrade linux-image-7.0.0-1015-ibmUpgrade linux-image-7.0.0-1015-oemUpgrade linux-image-azure-lts-26.04Upgrade linux-image-7.0.0-1016-azure-fdeUpgrade linux-image-7.0.0-1014-aws-64kUpgrade linux-image-generic-64k-7.0Upgrade linux-image-7.0.0-38-realtime-64kUpgrade linux-image-7.0.0-1014-gcp-64kUpgrade linux-image-7.0.0-1013-oracleUpgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-azure-fde-lts-26.04Upgrade linux-image-gkeUpgrade linux-image-aws-64kUpgrade linux-image-oem-26.04Upgrade linux-image-gcp-7.0Upgrade linux-image-ibm-7.0Upgrade linux-image-aws-7.0Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-ibmUpgrade linux-image-azureUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-7.0.0-38-genericUpgrade linux-image-azure-fdeUpgrade linux-image-7.0.0-1014-awsUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-7.0.0-1014-gcpUpgrade linux-image-azure-7.0Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-7.0.0-1008-gke-64kUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-gcp-64kUpgrade linux-image-gke-64kUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-oracle-64kUpgrade linux-image-realtime-64kUpgrade linux-image-oem-7.0Upgrade linux-image-gcpUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-realtimeUpgrade linux-image-oem-26.04aUpgrade linux-image-gke-64k-7.0Upgrade linux-image-7.0.0-1008-gkeUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-generic-7.0Upgrade linux-image-awsUpgrade linux-image-7.0.0-38-generic-64kUpgrade linux-image-oracle | Oct 7, 2026 | Oct 6, 2026 |
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