In the Linux kernel, the following vulnerability has been resolved:
ksmbd: require source read access for duplicate extents
FSCTL_DUPLICATE_EXTENTS_TO_FILE passes the source file directly to vfs_clone_file_range() or vfs_copy_file_range() without checking the SMB access mask granted to the source handle. A handle opened with attribute access can consequently be used to copy file contents into an attacker-readable destination.
Require FILE_READ_DATA on the source handle before either VFS operation, matching other ksmbd data-copy paths.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.12Upgrade linux-6.1Upgrade linux | Jul 28, 2026 | Jul 28, 2026 |
| Ubuntu | — | Upgrade linux-image-raspi-realtime-7.0Upgrade linux-image-generic-7.0Upgrade linux-image-nvidia-64k-7.0Upgrade linux-image-aws-64k-7.0Upgrade linux-image-oem-26.04Upgrade linux-image-nvidiaUpgrade linux-image-generic-64kUpgrade linux-image-raspiUpgrade linux-image-ibm-7.0Upgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-oem-7.0Upgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-1012-awsUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-gke-7.0Upgrade linux-image-oem-26.04aUpgrade linux-image-aws-7.0Upgrade linux-image-gke-64kUpgrade linux-image-nvidia-7.0Upgrade linux-image-ibmUpgrade linux-image-nvidia-bosUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-realtime-7.0Upgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-gke-64k-7.0Upgrade linux-image-gke-hwe-26.04Upgrade linux-image-awsUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-virtual-7.0Upgrade linux-image-nvidia-64kUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-gcpUpgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-genericUpgrade linux-image-raspi-7.0Upgrade linux-image-realtimeUpgrade linux-image-generic-64k-7.0Upgrade linux-image-virtualUpgrade linux-image-gkeUpgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-gcp-7.0Upgrade linux-image-realtime-64kUpgrade linux-image-7.0.0-1013-oemUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-aws-64kUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-7.0.0-31-genericUpgrade linux-image-oem-26.04bUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-realtime-64k-hwe-26.04 | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 31, 2026 | Jul 25, 2026 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub