CVE-2025-68288

Local USB protocol-data disclosure via uncleared CSW

Published Dec 16, 2025 · Updated Dec 16, 2025

Information disclosure in Linux kernel USB storage allows local users to read USB protocol status data through /dev/sg*. The usb_stor_Bulk_transport path validates a command status wrapper from the scatter-gather buffer but does not clear those bytes from the SCSI request transfer buffer. Exposure requires a USB storage device that incorrectly skips the data phase and local access to its SCSI generic interface; the disclosed content is residual USB protocol data.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Linux kernel USB storage allows local users to read USB protocol status data through /dev/sg*. The usb_stor_Bulk_transport path validates a command status wrapper from the scatter-gather buffer but does not clear those bytes from the SCSI request transfer buffer. Exposure requires a USB storage device that incorrectly skips the data phase and local access to its SCSI generic interface; the disclosed content is residual USB protocol data.

The record

CVE
CVE-2025-68288
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record 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=39169410574503c6e901de1aa6eac5108475e017
  2. Affected versionversion=4.17
  3. Affected versionversion=582802e7c617cfb07cc15f280c128e6decbc57b8
  4. Affected versionversion=58b7ce6f9ef2367f86384b20458642945993b816
  5. Affected versionversion=93314640426ddb6af618d0802e622f6fa771792c
  6. Affected versionversion=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <0f18eac44c5668204bf6eebb01ddb369ac56932b
  7. Affected versionversion=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <41e99fe2005182139b1058db71f0d241f8f0078c
  8. Affected versionversion=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <467fec3cefbeb9e3ea80f457da9a5666a71ca0d0
  9. Affected versionversion=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <4ba515dfff7eeca369ab85cdbb3f3b231c71720c
  10. Affected versionversion=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <5b815ddb3f5560fac35b16de3a2a22d5f81c5993
  11. Affected versionversion=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <83f0241959831586d9b6d47f6bd5d3dec8f43bf0
  12. Affected versionversion=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <cb1401b5bcc2feb5b038fc4b512e5968b016e05e
  13. Affected versionversion=ad2518320bc440ed3db072e2444a1bb226a9cf7a
  14. Affected versionversion=d827bea2d18c07ba514f7d48cde49f90da9a1384

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=39169410574503c6e901de1aa6eac5108475e017; version=4.17; version=582802e7c617cfb07cc15f280c128e6decbc57b8; version=58b7ce6f9ef2367f86384b20458642945993b816; version=93314640426ddb6af618d0802e622f6fa771792c; version=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <0f18eac44c5668204bf6eebb01ddb369ac56932b; version=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <41e99fe2005182139b1058db71f0d241f8f0078c; version=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <467fec3cefbeb9e3ea80f457da9a5666a71ca0d0; version=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <4ba515dfff7eeca369ab85cdbb3f3b231c71720c; version=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <5b815ddb3f5560fac35b16de3a2a22d5f81c5993; version=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <83f0241959831586d9b6d47f6bd5d3dec8f43bf0; version=a45b599ad808c3c982fdcdc12b0b8611c2f92824 <cb1401b5bcc2feb5b038fc4b512e5968b016e05e; version=ad2518320bc440ed3db072e2444a1bb226a9cf7a; version=d827bea2d18c07ba514f7d48cde49f90da9a1384

Published CVSS scores

5.5Oracle 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 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

T1005Data from Local System

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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