CVE-2026-31479

GPU virtual-memory corruption via incomplete unwind restoration

Published Apr 22, 2026 · Updated Apr 22, 2026

Improper VM-bind unwind handling in affected Linux Kernel releases allows local users to corrupt Intel xe GPU virtual-memory state. In vm_bind_ioctl_ops_unwind, skipped remap ends lose prev/next tracking while the original unmap range remains shrunken, so reinsertion can overlap mappings that were never removed. Triggering the flaw requires a 3D workload and a failing vector of VM binds; the published report establishes a warning and bad GPU VM state, not broader system compromise.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper VM-bind unwind handling in affected Linux Kernel releases allows local users to corrupt Intel xe GPU virtual-memory state. In vm_bind_ioctl_ops_unwind, skipped remap ends lose prev/next tracking while the original unmap range remains shrunken, so reinsertion can overlap mappings that were never removed. Triggering the flaw requires a 3D workload and a failing vector of VM binds; the published report establishes a warning and bad GPU VM state, not broader system compromise.

The record

CVE
CVE-2026-31479
Published
Apr 22, 2026
Updated
Apr 22, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 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=6.8
  2. Affected versionversion=8f33b4f054fc29a4774d8d10116ef460faeb84a8 <5eda8001ebb5269755608d678dd1f3928ab077c9
  3. Affected versionversion=8f33b4f054fc29a4774d8d10116ef460faeb84a8 <bfe9e314d7574d1c5c851972e7aee342733819d2
  4. Affected versionversion=8f33b4f054fc29a4774d8d10116ef460faeb84a8 <ccd41f110c608b3cc347b9be881c3e72cd634b2b
  5. Affected versionversion=8f33b4f054fc29a4774d8d10116ef460faeb84a8 <e6ba1749549e87b83c0c4885d84b543687c3740e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.8; version=8f33b4f054fc29a4774d8d10116ef460faeb84a8 <5eda8001ebb5269755608d678dd1f3928ab077c9; version=8f33b4f054fc29a4774d8d10116ef460faeb84a8 <bfe9e314d7574d1c5c851972e7aee342733819d2; version=8f33b4f054fc29a4774d8d10116ef460faeb84a8 <ccd41f110c608b3cc347b9be881c3e72cd634b2b; version=8f33b4f054fc29a4774d8d10116ef460faeb84a8 <e6ba1749549e87b83c0c4885d84b543687c3740e

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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

See the directory against your own environment.

Your stack

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