CVE-2025-68282

Kernel crash via USB gadget teardown race

Published Dec 16, 2025 · Updated Dec 16, 2025

Use-after-free in the USB gadget UDC core in Linux allows local users to crash the kernel during gadget teardown. usb_gadget_set_state() can queue gadget->work after usb_del_gadget() has flushed pending work but before the gadget memory is freed, so usb_gadget_state_work() later dereferences freed state. Low-privileged local access and a concurrent gadget-state event are required; reported consequences are information disclosure and service interruption.

CVSS severity6.3
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

Use-after-free in the USB gadget UDC core in Linux allows local users to crash the kernel during gadget teardown. usb_gadget_set_state() can queue gadget->work after usb_del_gadget() has flushed pending work but before the gadget memory is freed, so usb_gadget_state_work() later dereferences freed state. Low-privileged local access and a concurrent gadget-state event are required; reported consequences are information disclosure and service interruption.

The record

CVE
CVE-2025-68282
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-364, T1499.004
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

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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=3.12
  2. Affected versionversion=5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 <10014310193cf6736c1aeb4105c5f4a0818d0c65
  3. Affected versionversion=5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 <3b32caa73d135eea8fb9cabb45e9fc64c5a3ecb9
  4. Affected versionversion=5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 <baeb66fbd4201d1c4325074e78b1f557dff89b5b
  5. Affected versionversion=5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 <c12a0c3ef815ddd67e47f9c819f9fe822fed5467
  6. Affected versionversion=5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 <f02a412c0a18f02f0f91b0a3d9788315a721b7fd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.12; version=5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 <10014310193cf6736c1aeb4105c5f4a0818d0c65; version=5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 <3b32caa73d135eea8fb9cabb45e9fc64c5a3ecb9; version=5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 <baeb66fbd4201d1c4325074e78b1f557dff89b5b; version=5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 <c12a0c3ef815ddd67e47f9c819f9fe822fed5467; version=5702f75375aa9ecf8ad3431aef3fe6ce8c8dbd15 <f02a412c0a18f02f0f91b0a3d9788315a721b7fd

Published CVSS scores

6.3Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/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-364Signal Handler Race Condition
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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