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In the Linux kernel, the following vulnerability has been resolved:
iommu/s390: Implement blocking domain
This fixes a crash when surprise hot-unplugging a PCI device. This crash happens because during hot-unplug __iommu_group_set_domain_nofail() attaching the default domain fails when the platform no longer recognizes the device as it has already been removed and we end up with a NULL domain pointer and UAF. This is exactly the case referred to in the second comment in __iommu_device_set_domain() and just as stated there if we can instead attach the blocking domain the UAF is prevented as this can handle the already removed device. Implement the blocking domain to use this handling. With this change, the crash is fixed but we still hit a warning attempting to change DMA ownership on a blocked device.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Jul 9, 2025 | Dec 27, 2024 |
| Ubuntu | — | Upgrade linux-image-oem-24.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-oracleUpgrade linux-image-genericUpgrade linux-image-6.8.0-1026-nvidia-lowlatencyUpgrade linux-image-6.8.0-1026-nvidia-64kUpgrade linux-image-6.8.0-1026-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-6.8.0-1023-gkeUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-oem-22.04dUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-gkeUpgrade linux-image-realtimeUpgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-6.11.0-1015-oemUpgrade linux-image-6.8.0-58-genericUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-6.8.0-1024-ibmUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1024-oracleUpgrade linux-image-6.8.0-1028-gcp-64kUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-azureUpgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oem-22.04Upgrade linux-image-raspiUpgrade linux-image-6.8.0-1010-gkeopUpgrade linux-image-gkeopUpgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-6.8.0-1027-azureUpgrade linux-image-6.8.0-1027-azure-fdeUpgrade linux-image-6.8.0-1026-nvidiaUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-6.8.0-1026-oemUpgrade linux-image-nvidia-6.8Upgrade linux-image-6.8.0-1024-oracle-64kUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-gcp-64kUpgrade linux-image-generic-lpaeUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-azure-fdeUpgrade linux-image-kvmUpgrade linux-image-oem-22.04aUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-virtualUpgrade linux-image-generic-64kUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-gcpUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-oracle-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-lowlatencyUpgrade linux-image-awsUpgrade linux-image-6.8.0-58-lowlatencyUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-nvidia-64kUpgrade linux-image-ibmUpgrade linux-image-6.8.0-58-generic-64kUpgrade linux-image-6.8.0-1027-awsUpgrade linux-image-oem-24.04aUpgrade linux-image-6.8.1-1020-realtimeUpgrade linux-image-6.8.0-1028-gcpUpgrade linux-image-ibm-classicUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-oem-22.04bUpgrade linux-image-azure-nvidiaUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-oem-22.04cUpgrade linux-image-raspi-realtimeUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-nvidiaUpgrade linux-image-oem-24.04bUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-58-lowlatency-64kUpgrade linux-image-6.11.0-1011-oracle | Feb 20, 2025 | Dec 27, 2024 |
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