CVE-2025-38548

Incorrect hardware-monitoring data via truncated USB replies

Published Aug 16, 2025 · Updated May 11, 2026

Improper input validation in Linux allows local users to process incomplete Corsair Commander Pro USB replies as valid responses. The send_usb_cmd function previously accepted completion after ccp_raw_event copied a short report without verifying that the expected 64 bytes arrived. Exploitation requires low-privileged local access and the affected USB device path; later reads can consume incomplete or stale hardware-monitoring response bytes.

CVSS severity7.8
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Linux allows local users to process incomplete Corsair Commander Pro USB replies as valid responses. The send_usb_cmd function previously accepted completion after ccp_raw_event copied a short report without verifying that the expected 64 bytes arrived. Exploitation requires low-privileged local access and the affected USB device path; later reads can consume incomplete or stale hardware-monitoring response bytes.

The record

CVE
CVE-2025-38548
Published
Aug 16, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 16, 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=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <0db770e2922389753ddbd6663a5516a32b97b743
  2. Affected versionversion=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <2771d2ee3d95700f34e1e4df6a445c90565cd4e9
  3. Affected versionversion=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <2e6f4d9cfbda52700c126c5a2b93dd2042e8680c
  4. Affected versionversion=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <3c4bdc8a852e446080adc8ceb90ddd67a56e1bb8
  5. Affected versionversion=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <495a4f0dce9c8c4478c242209748f1ee9e4d5820
  6. Affected versionversion=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <4eb5cc48399f89b63acdbfe912fa5c8fe2900147
  7. Affected versionversion=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <eda5e38cc4dd2dcb422840540374910ef2818494
  8. Affected versionversion=5.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <0db770e2922389753ddbd6663a5516a32b97b743; version=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <2771d2ee3d95700f34e1e4df6a445c90565cd4e9; version=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <2e6f4d9cfbda52700c126c5a2b93dd2042e8680c; version=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <3c4bdc8a852e446080adc8ceb90ddd67a56e1bb8; version=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <495a4f0dce9c8c4478c242209748f1ee9e4d5820; version=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <4eb5cc48399f89b63acdbfe912fa5c8fe2900147; version=40c3a445422579db8ad96c234dbe6c0ab3f6b936 <eda5e38cc4dd2dcb422840540374910ef2818494; version=5.9

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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

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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