CVE-2025-38354

Kernel crash via premature GMU register access

Published Jul 25, 2025 · Updated May 23, 2026

Denial of service in Linux 6.0 and affected stable branches allows local users to trigger a kernel crash during hot MSM GPU initialization. msm_devfreq_init() suspends devfreq without setting df->suspended, so msm_devfreq_get_dev_status() reads GMU registers before GMU initialization. Reachability requires an MSM Adreno A6xx GPU that is already hot when devfreq cooling registers during boot; the bounded consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.16%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux 6.0 and affected stable branches allows local users to trigger a kernel crash during hot MSM GPU initialization. msm_devfreq_init() suspends devfreq without setting df->suspended, so msm_devfreq_get_dev_status() reads GMU registers before GMU initialization. Reachability requires an MSM Adreno A6xx GPU that is already hot when devfreq cooling registers during boot; the bounded consequence is a kernel crash.

The record

CVE
CVE-2025-38354
Published
Jul 25, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 25, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=1f6c087dd6a915f1c3471f0f0f696847fc8c592f
  2. Affected versionversion=5.18.18 <5.19
  3. Affected versionversion=5.19.2 <5.20
  4. Affected versionversion=6.0
  5. Affected versionversion=6694482a70e9536efbf2ac233cbf0c302d6e2dae <1847ea44e3bdf7da8ff4158bc01b43a2e46394bd
  6. Affected versionversion=6694482a70e9536efbf2ac233cbf0c302d6e2dae <7946a10f8da75abc494e4bb80243e153e93e459a
  7. Affected versionversion=6694482a70e9536efbf2ac233cbf0c302d6e2dae <a6f673cc9488fd722c601fe020601dba14db21b2
  8. Affected versionversion=6694482a70e9536efbf2ac233cbf0c302d6e2dae <ae2015b0dbc0eea7aaf022194371f451f784d994
  9. Affected versionversion=6694482a70e9536efbf2ac233cbf0c302d6e2dae <b71717735be48d7743a34897e9e44a0b53e30c0e
  10. Affected versionversion=9c8b3f05fb18fba12f3fca80a378c9b8f3d04cd6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1f6c087dd6a915f1c3471f0f0f696847fc8c592f; version=5.18.18 <5.19; version=5.19.2 <5.20; version=6.0; version=6694482a70e9536efbf2ac233cbf0c302d6e2dae <1847ea44e3bdf7da8ff4158bc01b43a2e46394bd; version=6694482a70e9536efbf2ac233cbf0c302d6e2dae <7946a10f8da75abc494e4bb80243e153e93e459a; version=6694482a70e9536efbf2ac233cbf0c302d6e2dae <a6f673cc9488fd722c601fe020601dba14db21b2; version=6694482a70e9536efbf2ac233cbf0c302d6e2dae <ae2015b0dbc0eea7aaf022194371f451f784d994; version=6694482a70e9536efbf2ac233cbf0c302d6e2dae <b71717735be48d7743a34897e9e44a0b53e30c0e; version=9c8b3f05fb18fba12f3fca80a378c9b8f3d04cd6

Published CVSS scores

5.5Canonical UbuntuCVSS: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

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No observations available

Sep 11, 2026Sep 17, 2026
Latest reporting daySep 17, 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

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Your stack

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