In the Linux kernel, the following vulnerability has been resolved:
iommufd: Set veventq_depth upper bound
iommufd_veventq_alloc() accepts any !0 veventq_depth from userspace, with an upper bound at U32_MAX.
This leaves a vulnerability where userspace can allocate excessively large queues to exhaust kernel memory reserves.
Cap the veventq_depth (maximum number of entries) to 1 << 19, matching the maximum number of entries in the SMMUv3 EVTQ (the largest use case today).
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade python3-perf6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-debuginfoUpgrade kernel6.18-develUpgrade perf6.18Upgrade kernel6.18-tools-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade bpftool6.18Upgrade kernel6.18-debuginfo-common-x86_64Upgrade bpftool6.18-debuginfoUpgrade kernel6.18Upgrade perf6.18-debuginfoUpgrade kernel6.18-headersUpgrade kernel6.18-toolsUpgrade kernel6.18-modules-extraUpgrade kernel6.18-tools-develUpgrade kernel-livepatch-6.18.39-79.141Upgrade microvm-kernel6.18Upgrade kernel6.18-modules-extra-common | Aug 18, 2026 | Jul 25, 2026 |
| Redhat_linux | — | No solution exists | Jul 31, 2026 | Jul 25, 2026 |
| Ubuntu | — | Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-nvidia-7.0Upgrade linux-image-realtimeUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-gke-7.0Upgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-realtime-7.0Upgrade linux-image-generic-7.0Upgrade linux-image-gke-hwe-26.04Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-gke-64kUpgrade linux-image-virtual-7.0Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-aws-7.0Upgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-oem-26.04bUpgrade linux-image-realtime-64kUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-virtualUpgrade linux-image-awsUpgrade linux-image-oem-7.0Upgrade linux-image-oem-26.04aUpgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-7.0.0-1013-oemUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-generic-64k-7.0Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-7.0.0-1012-awsUpgrade linux-image-gkeUpgrade linux-image-gcpUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-7.0.0-31-genericUpgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-oem-26.04Upgrade linux-image-gke-64k-7.0Upgrade linux-image-nvidia-64k-7.0Upgrade linux-image-generic-64kUpgrade linux-image-gcp-64kUpgrade linux-image-genericUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-aws-64k | Sep 14, 2026 | Sep 7, 2026 |
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