CVE-2025-37767

Kernel crash via oversized GPU fan speed

Published May 1, 2025 · Updated May 11, 2026

Divide-by-zero in the Linux kernel allows local users to crash the system by setting an excessive AMD GPU fan speed. smu_v13_0_set_fan_speed_rpm accepts values above UINT_MAX/8, allowing unsigned multiplication to produce a zero divisor in the tachometer-period calculation. Low-privilege local access and affected AMD SMU13 graphics hardware are required; the demonstrated consequence is limited to availability loss.

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

Divide-by-zero in the Linux kernel allows local users to crash the system by setting an excessive AMD GPU fan speed. smu_v13_0_set_fan_speed_rpm accepts values above UINT_MAX/8, allowing unsigned multiplication to produce a zero divisor in the tachometer-period calculation. Low-privilege local access and affected AMD SMU13 graphics hardware are required; the demonstrated consequence is limited to availability loss.

The record

CVE
CVE-2025-37767
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-369, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.13
  2. Affected versionversion=c05d1c401572ac63d704183b19db2ce746961412 <327107bd7f052f4ee2d0c966c7ae879822f1814f
  3. Affected versionversion=c05d1c401572ac63d704183b19db2ce746961412 <8f7b5987e21e003cafac28f0e4d323e6496f83ba
  4. Affected versionversion=c05d1c401572ac63d704183b19db2ce746961412 <c3ff73e3bddf1a6c30d7effe4018d12ba0cadd2e
  5. Affected versionversion=c05d1c401572ac63d704183b19db2ce746961412 <f23e9116ebb71b63fe9cec0dcac792aa9af30b0c
  6. Affected versionversion=c05d1c401572ac63d704183b19db2ce746961412 <f2904fa2b9da943db6bef7c0f8b3fb4fc14acbc4
  7. Affected versionversion=c05d1c401572ac63d704183b19db2ce746961412 <fb803d4bb9ea0a61c21c4987505e4d4ae18f9fdc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=c05d1c401572ac63d704183b19db2ce746961412 <327107bd7f052f4ee2d0c966c7ae879822f1814f; version=c05d1c401572ac63d704183b19db2ce746961412 <8f7b5987e21e003cafac28f0e4d323e6496f83ba; version=c05d1c401572ac63d704183b19db2ce746961412 <c3ff73e3bddf1a6c30d7effe4018d12ba0cadd2e; version=c05d1c401572ac63d704183b19db2ce746961412 <f23e9116ebb71b63fe9cec0dcac792aa9af30b0c; version=c05d1c401572ac63d704183b19db2ce746961412 <f2904fa2b9da943db6bef7c0f8b3fb4fc14acbc4; version=c05d1c401572ac63d704183b19db2ce746961412 <fb803d4bb9ea0a61c21c4987505e4d4ae18f9fdc

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.

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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-369Divide By Zero
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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