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CVE-2026-90286

HIGHCVSS 8.8/10

Last modified

CVE-2026-90286 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/gfx6: Use PFP on the compute queues too On GFX6, the compute rings use the same CP path as the graphics ring. The only difference is that they don't support draw commands.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/gfx6: Use PFP on the compute queues too On GFX6, the compute rings use the same CP path as the graphics ring. The only difference is that they don't support draw commands. (As opposed to GFX7 and newer which have a separate command parser that is called MEC for compute queues.) This means that we have to take into consideration that the PFP also exists on compute queues on GFX6: Use PFP for register writes on both graphics and compute queues. In the pipeline sync, use the PFP to wait for the previous fence (and not the ME) to prevent the PFP from starting to execute the next submission while the ME is still in the previous submission. After a VM flush, emit PFP_SYNC_ME on compute queues as well.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 2cd46ad22383ab8372b86cdb5257589496099412, < f37211b9c01433f0bbb4709d25df7a0257cf915b; >= 2cd46ad22383ab8372b86cdb5257589496099412, < 2aa869c6b23e0b1b7f39f762618852811d75deb9; >= 2cd46ad22383ab8372b86cdb5257589496099412, < fbabc39b4f0fc771b00525ffd448be6a84355048; >= 2cd46ad22383ab8372b86cdb5257589496099412, < b5d1d3e4519dc8f1b55d6b236848bed67b11a2e8; >= 2cd46ad22383ab8372b86cdb5257589496099412, < e1d3018e3621c90cec070b6915836ae129656663; >= 2cd46ad22383ab8372b86cdb5257589496099412, < 8d752f1bb73fabe5a425acbf5c767c0fe68bf3c5; >= 2cd46ad22383ab8372b86cdb5257589496099412, < e399e9d7e291ccbeba6560fb8278c8d2aa744521; >= 2cd46ad22383ab8372b86cdb5257589496099412, < 60f20946cd318518ddc2c0da12103c666b2b9564
LinuxLinux4.9

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90286?
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/gfx6: Use PFP on the compute queues too On GFX6, the compute rings use the same CP path as the graphics ring. The only difference is that they don't support draw commands. (As opposed to GFX7 and newer which have a separate command parser that is called MEC for compute queues.) This means that we have to take into consideration that the PFP also exists on compute queues on GFX6: Use PFP for register writes on both graphics and compute queues. In the pipeline sync, use the PFP to wait for the previous fence (and not the ME) to prevent the PFP from starting to execute the next submission while the ME is still in the previous submission. After a VM flush, emit PFP_SYNC_ME on compute queues as well.
How severe is CVE-2026-90286?
CVE-2026-90286 has a CVSS score of 8.8/10 (HIGH severity).
How do I fix CVE-2026-90286?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST