CVE-2026-31785

Local denial of service via unchecked VMA writes

Published May 1, 2026 · Updated May 1, 2026

Improper access control in the Linux kernel 6.19 through 6.19.11 allows local users to interrupt system availability through Intel Xe GPU faults. The xe_pagefault_service handler accepts write or atomic page-fault access after finding a read-only GPU virtual memory area instead of rejecting it. Exploitation requires low-privileged local access and an active Intel Xe GPU mapping; published records do not identify whether interruption is a hang, crash, or reboot.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in the Linux kernel 6.19 through 6.19.11 allows local users to interrupt system availability through Intel Xe GPU faults. The xe_pagefault_service handler accepts write or atomic page-fault access after finding a read-only GPU virtual memory area instead of rejecting it. Exploitation requires low-privileged local access and an active Intel Xe GPU mapping; published records do not identify whether interruption is a hang, crash, or reboot.

The record

CVE
CVE-2026-31785
Published
May 1, 2026
Updated
May 1, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=6.19
  2. Affected versionversion=fb544b8445080c6488a58c01022550adc0873283 <6d192b4f2d644d15d9a9f1d33dab05af936f6540
  3. Affected versionversion=fb544b8445080c6488a58c01022550adc0873283 <b656f040ed4ed2074dfb78072745b41d44368be0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.19; version=fb544b8445080c6488a58c01022550adc0873283 <6d192b4f2d644d15d9a9f1d33dab05af936f6540; version=fb544b8445080c6488a58c01022550adc0873283 <b656f040ed4ed2074dfb78072745b41d44368be0

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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