CVE-2026-72311

Local denial of service via leaked VMA arrays

Published Aug 15, 2026 · Updated Aug 15, 2026

Resource leak in the Linux kernel drm/xe driver 7.1 allows local users to exhaust memory through failed PAT madvise ioctl requests. The L2 flush branch in xe_vm_madvise_ioctl() jumps to madv_fini after get_vmas() allocates madvise_range.vmas, bypassing free_vmas() and kfree(). The path requires local access to the drm/xe ioctl and an SVM or userptr range rejected by L2 validation; repeated requests exhaust kernel memory and interrupt services.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the Linux kernel drm/xe driver 7.1 allows local users to exhaust memory through failed PAT madvise ioctl requests. The L2 flush branch in xe_vm_madvise_ioctl() jumps to madv_fini after get_vmas() allocates madvise_range.vmas, bypassing free_vmas() and kfree(). The path requires local access to the drm/xe ioctl and an SVM or userptr range rejected by L2 validation; repeated requests exhaust kernel memory and interrupt services.

The record

CVE
CVE-2026-72311
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-772, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=4f39a194d41e6b8cb61a91a7bb01b17be59a7d73 <14abbed336a2d1bbd726c25d148d2ec0ff928073
  2. Affected versionversion=4f39a194d41e6b8cb61a91a7bb01b17be59a7d73 <bf126747e7bff55e5ba0b1ec10fc5fce99feaed9
  3. Affected versionversion=7.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4f39a194d41e6b8cb61a91a7bb01b17be59a7d73 <14abbed336a2d1bbd726c25d148d2ec0ff928073; version=4f39a194d41e6b8cb61a91a7bb01b17be59a7d73 <bf126747e7bff55e5ba0b1ec10fc5fce99feaed9; version=7.1

Published CVSS scores

5.5Red HatCVSS: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

CWE-772Missing Release of Resource after Effective Lifetime
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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