In the Linux kernel, the following vulnerability has been resolved:
drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise
Add validation in xe_vm_madvise_ioctl() to reject PAT indices with XE_COH_NONE coherency mode when applied to CPU cached memory.
Using coh_none with CPU cached buffers is a security issue. When the kernel clears pages before reallocation, the clear operation stays in CPU cache (dirty). GPU with coh_none can bypass CPU caches and read stale sensitive data directly from DRAM, potentially leaking data from previously freed pages of other processes.
This aligns with the existing validation in vm_bind path (xe_vm_bind_ioctl_validate_bo).
v2(Matthew brost) - Add fixes - Move one debug print to better place
v3(Matthew Auld) - Should be drm/xe/uapi - More Cc
v4(Shuicheng Lin) - Fix kmem leak issues by the way
v5 - Remove kmem leak because it has been merged by another patch
v6 - Remove the fix which is not related to current fix
v7 - No change
v8 - Rebase
v9 - Limit the restrictions to iGPU
v10 - No change
(cherry picked from commit 016ccdb674b8c899940b3944952c96a6a490d10a)
CVSS Details
- CVSS 3.1 Base Score: 7
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jun 8, 2026 |
| Ubuntu | — | Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-7.0.0-1010-azureUpgrade linux-image-generic-64k-7.0Upgrade linux-image-oem-26.04Upgrade linux-image-gke-64k-7.0Upgrade linux-image-ibmUpgrade linux-image-azure-fdeUpgrade linux-image-azureUpgrade linux-image-oem-26.04aUpgrade linux-image-oem-7.0Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-gke-7.0Upgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-gcp-64kUpgrade linux-image-nvidiaUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-nvidia-bosUpgrade linux-image-oem-24.04aUpgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-gke-64kUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-nvidia-7.0Upgrade linux-image-genericUpgrade linux-image-generic-64kUpgrade linux-image-ibm-7.0Upgrade linux-image-azure-fde-7.0Upgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-7.0.0-1009-awsUpgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-nvidia-64kUpgrade linux-image-oracle-64kUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-7.0.0-1009-oemUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-7.0.0-1008-gcpUpgrade linux-image-raspiUpgrade linux-image-oem-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-azure-7.0Upgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-virtualUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-7.0.0-1008-gcp-64kUpgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-oem-24.04dUpgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-28-generic-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-7.0.0-1003-gke-64kUpgrade linux-image-gcpUpgrade linux-image-7.0.0-28-realtime-64kUpgrade linux-image-7.0.0-28-realtimeUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-7.0.0-28-genericUpgrade linux-image-7.0.0-1014-azureUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-realtime-7.0Upgrade linux-image-oem-24.04cUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-generic-7.0Upgrade linux-image-realtimeUpgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-aws-7.0Upgrade linux-image-awsUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-oem-24.04bUpgrade linux-image-raspi-7.0Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-oracleUpgrade linux-image-virtual-7.0Upgrade linux-image-gkeUpgrade linux-image-7.0.0-1003-gkeUpgrade linux-image-aws-64kUpgrade linux-image-realtime-64kUpgrade linux-image-raspi-realtime | Jul 20, 2026 | Jun 8, 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