In the Linux kernel, the following vulnerability has been resolved:
fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region()
afu_ioctl_dma_map() accepts a 64-bit length from userspace via DFL_FPGA_PORT_DMA_MAP ioctl without an upper bound check. The value is passed to afu_dma_pin_pages() where npages is derived as length >> PAGE_SHIFT and passed to pin_user_pages_fast() which takes int nr_pages, causing implicit truncation if length is very large.
Validate map.length at the ioctl entry point before calling afu_dma_map_region(), rejecting values whose page count exceeds INT_MAX.
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 |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.12Upgrade linux | Aug 9, 2026 | Aug 9, 2026 |
| Ubuntu | — | Upgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-oem-7.0Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-aws-7.0Upgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-1012-awsUpgrade linux-image-raspiUpgrade linux-image-oem-26.04aUpgrade linux-image-genericUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-gke-64kUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-nvidia-7.0Upgrade linux-image-nvidia-bos-7.0Upgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-1013-oemUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-generic-64kUpgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-gke-64k-7.0Upgrade linux-image-nvidia-tegraUpgrade linux-image-ibm-7.0Upgrade linux-image-raspi-realtime-7.0Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-nvidia-64kUpgrade linux-image-generic-64k-7.0Upgrade linux-image-realtime-7.0Upgrade linux-image-gke-7.0Upgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-nvidia-bosUpgrade linux-image-nvidiaUpgrade linux-image-oem-26.04Upgrade linux-image-generic-7.0Upgrade linux-image-virtual-7.0Upgrade linux-image-7.0.0-31-genericUpgrade linux-image-gcpUpgrade linux-image-realtime-64kUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-virtualUpgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-oem-26.04bUpgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-realtimeUpgrade linux-image-gkeUpgrade linux-image-awsUpgrade linux-image-ibmUpgrade linux-image-raspi-7.0Upgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-6.8.0-1035-nvidia-tegraUpgrade linux-image-aws-64kUpgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-gcp-7.0Upgrade linux-image-raspi-realtimeUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-aws-64k-7.0 | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 13, 2026 | Jul 25, 2026 |
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