drm/amdgpu/gfx6: Use PFP on the compute queues too
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 6 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-90286
- 2026-10-03 Alias added: GHSA-v695-f62m-x7j7
- 2026-10-15 Affected versions changed · Red Hat
- 2026-10-15 CVSS score added · Red Hat
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/f37211b9c01433f0bbb4709d25df7a0257cf915b
- https://git.kernel.org/stable/c/2aa869c6b23e0b1b7f39f762618852811d75deb9
- https://git.kernel.org/stable/c/fbabc39b4f0fc771b00525ffd448be6a84355048
- https://git.kernel.org/stable/c/b5d1d3e4519dc8f1b55d6b236848bed67b11a2e8
- https://git.kernel.org/stable/c/e1d3018e3621c90cec070b6915836ae129656663
- https://git.kernel.org/stable/c/8d752f1bb73fabe5a425acbf5c767c0fe68bf3c5
- https://git.kernel.org/stable/c/e399e9d7e291ccbeba6560fb8278c8d2aa744521
- https://git.kernel.org/stable/c/60f20946cd318518ddc2c0da12103c666b2b9564
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Sources
- CVE-2026-90286 · CVE Program
- CVE-2026-90286 · NVD
- FIRST EPSS
- GHSA-v695-f62m-x7j7 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-90286 · Red Hat security data · CC BY 4.0
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