CVE-2026-74420

Local denial of service via unsupported GPUSVM ranges

Published Aug 15, 2026 · Updated Aug 15, 2026

Denial of service in Linux 6.15 through 7.1.4 allows local users to hang a GPU driver page-fault handler via a crafted SVM range. The GPUSVM range-creation path accepts VM_IO or VM_PFNMAP VMAs even though they lack the struct page objects required by get_pages, causing repeated fault failures. Exploitation requires local low-privileged access to create such an SVM range; the bounded impact is a driver handler hang.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux 6.15 through 7.1.4 allows local users to hang a GPU driver page-fault handler via a crafted SVM range. The GPUSVM range-creation path accepts VM_IO or VM_PFNMAP VMAs even though they lack the struct page objects required by get_pages, causing repeated fault failures. Exploitation requires local low-privileged access to create such an SVM range; the bounded impact is a driver handler hang.

The record

CVE
CVE-2026-74420
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
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=6.15
  2. Affected versionversion=99624bdff8670795b678eafa6509aaad3a5c0175 <353f26c74660bcbd8d82cd76622748e14a5a5db3
  3. Affected versionversion=99624bdff8670795b678eafa6509aaad3a5c0175 <63f443384979563f16f70420f4fa85bba31238ca
  4. Affected versionversion=99624bdff8670795b678eafa6509aaad3a5c0175 <b82a225e57a334335a21462b75ee2223bc6efe6d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.15; version=99624bdff8670795b678eafa6509aaad3a5c0175 <353f26c74660bcbd8d82cd76622748e14a5a5db3; version=99624bdff8670795b678eafa6509aaad3a5c0175 <63f443384979563f16f70420f4fa85bba31238ca; version=99624bdff8670795b678eafa6509aaad3a5c0175 <b82a225e57a334335a21462b75ee2223bc6efe6d

Published CVSS scores

5.5Amazon LinuxCVSS: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.

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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

T1499.004Application 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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