In the Linux kernel, the following vulnerability has been resolved:
RDMA/umem: Fix truncation for block sizes >= 4G
When the iommu is used the linearization of the mapping can give a single block that is very large split across multiple SG entries.
When __rdma_block_iter_next() reassembles the split SG entries it is overflowing the 32 bit stack values and computed the wrong DMA addresses for blocks after the truncation.
Use the right types to hold DMA addresses.
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 |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-headersUpgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernelUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade python-perf-debuginfoUpgrade perfUpgrade bpftoolUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-develUpgrade python-perfUpgrade kernel-livepatch-5.10.259-258.1043Upgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-5.15.210-148.245 | Jul 16, 2026 | Jul 16, 2026 |
| Amazon_linux_2023 | — | Upgrade bpftool6.18Upgrade perf6.12Upgrade kernel6.12Upgrade bpftool6.12Upgrade perfUpgrade kernel-modules-extraUpgrade kernel-livepatch-6.12.94-123.174Upgrade perf6.18-debuginfoUpgrade bpftool6.12-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade kernel6.12-modules-extraUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-modules-extra-commonUpgrade kernel6.12-headersUpgrade kernel-livepatch-6.1.176-220.358Upgrade perf-debuginfoUpgrade kernel-livepatch-6.18.36-69.134Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-develUpgrade kernel6.18-tools-develUpgrade python3-perf6.12Upgrade kernel-debuginfoUpgrade microvm-kernel6.18Upgrade kernel6.18-toolsUpgrade kernel6.12-debuginfoUpgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade kernel6.12-debuginfo-common-x86_64Upgrade python3-perf6.18Upgrade kernel6.18-headersUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.18-debuginfoUpgrade bpftool6.18-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-toolsUpgrade python3-perfUpgrade perf6.12-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-modules-extra-commonUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.18Upgrade kernel6.12-tools-develUpgrade python3-perf6.18-debuginfoUpgrade kernel-tools-develUpgrade kernel6.18-develUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernelUpgrade kernel6.18-modules-extraUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-develUpgrade kernel-headersUpgrade perf6.18 | Jul 21, 2026 | Jun 25, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Jul 5, 2026 | Jul 5, 2026 |
| Ubuntu | — | Upgrade linux-image-realtime-7.0Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-generic-7.0Upgrade linux-image-oem-26.04aUpgrade linux-image-aws-64kUpgrade linux-image-aws-7.0Upgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-raspiUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-gke-7.0Upgrade linux-image-oem-7.0Upgrade linux-image-gke-hwe-26.04Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-awsUpgrade linux-image-generic-64k-7.0Upgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-realtime-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-gke-64k-7.0Upgrade linux-image-raspi-7.0Upgrade linux-image-gkeUpgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-azure-7.0Upgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-1012-awsUpgrade linux-image-oracle-64kUpgrade linux-image-nvidia-bosUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-realtimeUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-azureUpgrade linux-image-aws-64k-7.0Upgrade linux-image-gke-64kUpgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-oracleUpgrade linux-image-nvidia-64kUpgrade linux-image-gcpUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-nvidiaUpgrade linux-image-genericUpgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-virtual-7.0Upgrade linux-image-virtualUpgrade linux-image-oem-26.04Upgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-ibmUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-7.0Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-7.0.0-31-genericUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-nvidia-tegraUpgrade linux-image-ibm-7.0Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-gcp-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-6.8.0-1035-nvidia-tegraUpgrade linux-image-generic-64kUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-nvidia-bos-7.0Upgrade linux-image-7.0.0-1013-oemUpgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-azure-lts-26.04Upgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-oem-26.04b | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 6, 2026 | Jun 25, 2026 |
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