CVE-2026-90286

Privilege escalation via stale GPUVM translations

Published Sep 17, 2026 · Updated Sep 18, 2026

Privilege escalation in affected Linux stable kernels allows local users to read and write physical memory through GFX6 GPU DMA. On GFX6 compute queues, gfx_v6_0_ring_emit_pipeline_sync waits with the micro-engine rather than the prefetch parser and omits PFP_SYNC_ME after VM flushes, allowing prefetched work to use stale GPUVM translations. Access to /dev/dri/renderD* and GFX6 hardware is required; successful triggering crosses GPUVM isolation and can corrupt host memory or reset the shared GPU.

CVSS severity8.8
High
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in affected Linux stable kernels allows local users to read and write physical memory through GFX6 GPU DMA. On GFX6 compute queues, gfx_v6_0_ring_emit_pipeline_sync waits with the micro-engine rather than the prefetch parser and omits PFP_SYNC_ME after VM flushes, allowing prefetched work to use stale GPUVM translations. Access to /dev/dri/renderD* and GFX6 hardware is required; successful triggering crosses GPUVM isolation and can corrupt host memory or reset the shared GPU.

The record

CVE
CVE-2026-90286
Published
Sep 17, 2026
Updated
Sep 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2cd46ad22383ab8372b86cdb5257589496099412 <2aa869c6b23e0b1b7f39f762618852811d75deb9
  2. Affected versionversion=2cd46ad22383ab8372b86cdb5257589496099412 <60f20946cd318518ddc2c0da12103c666b2b9564
  3. Affected versionversion=2cd46ad22383ab8372b86cdb5257589496099412 <8d752f1bb73fabe5a425acbf5c767c0fe68bf3c5
  4. Affected versionversion=2cd46ad22383ab8372b86cdb5257589496099412 <b5d1d3e4519dc8f1b55d6b236848bed67b11a2e8
  5. Affected versionversion=2cd46ad22383ab8372b86cdb5257589496099412 <e1d3018e3621c90cec070b6915836ae129656663
  6. Affected versionversion=2cd46ad22383ab8372b86cdb5257589496099412 <e399e9d7e291ccbeba6560fb8278c8d2aa744521
  7. Affected versionversion=2cd46ad22383ab8372b86cdb5257589496099412 <f37211b9c01433f0bbb4709d25df7a0257cf915b
  8. Affected versionversion=2cd46ad22383ab8372b86cdb5257589496099412 <fbabc39b4f0fc771b00525ffd448be6a84355048
  9. Affected versionversion=4.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2cd46ad22383ab8372b86cdb5257589496099412 <2aa869c6b23e0b1b7f39f762618852811d75deb9; version=2cd46ad22383ab8372b86cdb5257589496099412 <60f20946cd318518ddc2c0da12103c666b2b9564; version=2cd46ad22383ab8372b86cdb5257589496099412 <8d752f1bb73fabe5a425acbf5c767c0fe68bf3c5; version=2cd46ad22383ab8372b86cdb5257589496099412 <b5d1d3e4519dc8f1b55d6b236848bed67b11a2e8; version=2cd46ad22383ab8372b86cdb5257589496099412 <e1d3018e3621c90cec070b6915836ae129656663; version=2cd46ad22383ab8372b86cdb5257589496099412 <e399e9d7e291ccbeba6560fb8278c8d2aa744521; version=2cd46ad22383ab8372b86cdb5257589496099412 <f37211b9c01433f0bbb4709d25df7a0257cf915b; version=2cd46ad22383ab8372b86cdb5257589496099412 <fbabc39b4f0fc771b00525ffd448be6a84355048; version=4.9

Published CVSS scores

8.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
4.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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