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.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Redhat_linux | — | Upgrade kernel-rtNo solution existsUpgrade kernel | Jul 9, 2025 | Dec 27, 2024 |
| Ubuntu | — | Upgrade linux-image-6.8.0-58-lowlatency-64kUpgrade linux-image-kvmUpgrade linux-image-oem-22.04aUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-virtualUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-azure-lts-24.04Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-generic-64kUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-azure-fdeUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-ibmUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-oem-22.04bUpgrade linux-image-oem-24.04bUpgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-1027-awsUpgrade linux-image-azure-nvidiaUpgrade linux-image-oem-22.04cUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-nvidiaUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-gcpUpgrade linux-image-ibm-classicUpgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-58-generic-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-lpaeUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-1028-gcpUpgrade linux-image-awsUpgrade linux-image-lowlatencyUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-6.8.1-1020-realtimeUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-58-lowlatencyUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1027-azure-fdeUpgrade linux-image-oem-22.04Upgrade linux-image-6.11.0-1009-awsUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-6.11.0-18-genericUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-6.8.0-1026-oemUpgrade linux-image-6.8.0-1024-oracle-64kUpgrade linux-image-6.8.0-1024-ibmUpgrade linux-image-gkeopUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-6.8.0-1026-nvidia-lowlatencyUpgrade linux-image-6.8.0-1024-oracleUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-6.8.0-1028-gcp-64kUpgrade linux-image-oracleUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-realtimeUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-6.11.0-1015-oemUpgrade linux-image-nvidia-6.8Upgrade linux-image-gcp-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-genericUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-oem-24.04Upgrade linux-image-azureUpgrade linux-image-raspiUpgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-6.8.0-1010-gkeopUpgrade linux-image-6.8.0-1027-azureUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-1026-nvidia-64kUpgrade linux-image-6.8.0-1026-nvidiaUpgrade linux-image-6.8.0-1023-gkeUpgrade linux-image-6.8.0-1026-nvidia-lowlatency-64kUpgrade linux-image-oem-22.04dUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-6.8.0-58-genericUpgrade linux-image-gcp-64k-lts-24.04 | Feb 20, 2025 | Dec 27, 2024 |
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