CVE-2026-68240

Resource exhaustion via leaked GPU device mappings

Published Aug 10, 2026 · Updated Aug 10, 2026

Resource leak in the Linux kernel's drm/gpusvm allows local users to consume device mappings by triggering page-mapping errors. drm_gpusvm_get_pages() stores dpagemap only after every page maps successfully, so an error leaves it NULL and makes __drm_gpusvm_unmap_pages() skip device_unmap() for mappings already created. Low-privileged local access and a system with gpusvm are required; repeated failures consume mapping resources and degrade stability or performance.

CVSS severity8.8
High
EPSS probability0.16%
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's drm/gpusvm allows local users to consume device mappings by triggering page-mapping errors. drm_gpusvm_get_pages() stores dpagemap only after every page maps successfully, so an error leaves it NULL and makes __drm_gpusvm_unmap_pages() skip device_unmap() for mappings already created. Low-privileged local access and a system with gpusvm are required; repeated failures consume mapping resources and degrade stability or performance.

The record

CVE
CVE-2026-68240
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-772, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=6.18
  2. Affected versionversion=f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9 <72e4fca5529e45b5beebad79d804de442f632324
  3. Affected versionversion=f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9 <7f708f51e3955bda0d77a0b67ab9bea6c97fea99
  4. Affected versionversion=f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9 <e8362523fd1b61712f7d996802f9b5dee545c7e6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.18; version=f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9 <72e4fca5529e45b5beebad79d804de442f632324; version=f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9 <7f708f51e3955bda0d77a0b67ab9bea6c97fea99; version=f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9 <e8362523fd1b61712f7d996802f9b5dee545c7e6

Published CVSS scores

8.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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.

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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

CWE-772Missing Release of Resource after Effective Lifetime
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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