In the Linux kernel, the following vulnerability has been resolved:
ksmbd: use opener credentials for delete-on-close
Delete-on-close can be completed by deferred or durable handle teardown, where no request work is available. Both the base-file unlink and the ADS xattr removal consequently run with the ksmbd worker credentials and can bypass filesystem permission checks.
Run both operations with the credentials captured in struct file when the handle was opened. This preserves the authenticated user's fsuid, fsgid, supplementary groups and capability restrictions at final close.
CVSS Details
- CVSS 3.1 Base Score: 9.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux-6.12Upgrade linux | Jul 28, 2026 | Jul 28, 2026 |
| Ubuntu | — | Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-aws-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-gke-64k-7.0Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-oem-7.0Upgrade linux-image-realtimeUpgrade linux-image-realtime-7.0Upgrade linux-image-gke-hwe-26.04Upgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-awsUpgrade linux-image-realtime-64kUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-gke-7.0Upgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-7.0.0-1012-awsUpgrade linux-image-aws-7.0Upgrade linux-image-gkeUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-oem-26.04aUpgrade linux-image-generic-7.0Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-7.0.0-1013-oemUpgrade linux-image-generic-64kUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-oem-26.04Upgrade linux-image-gcp-7.0Upgrade linux-image-virtual-7.0Upgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-gke-64kUpgrade linux-image-genericUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-31-genericUpgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-oem-26.04bUpgrade linux-image-gcpUpgrade linux-image-virtualUpgrade linux-image-nvidia-7.0Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-generic-64k-7.0 | 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 |
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