CVE-2025-68287: usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths

Q: What is the severity of CVE-2025-68287?

CVE-2025-68287 has a medium severity rating due to its potential impact on system stability.

Q: How do I fix CVE-2025-68287?

To fix CVE-2025-68287, apply the latest Linux kernel patch that addresses the race condition in dwc3_remove_requests().

Q: Which versions of the Linux kernel are affected by CVE-2025-68287?

CVE-2025-68287 affects various versions of the Linux kernel that utilize the dwc3 USB controller.

Q: What types of issues does CVE-2025-68287 cause?

CVE-2025-68287 can lead to system instability and potentially crashes due to race conditions.

Q: Is CVE-2025-68287 specific to any hardware?

CVE-2025-68287 is specific to implementations that utilize the dwc3 USB controller within the Linux kernel.

Published Dec 16, 2025

Updated

In the Linux kernel, the following vulnerability has been resolved:

usb: dwc3: Fix race condition between concurrent dwc3removerequests() call paths

This patch addresses a race condition caused by unsynchronized execution of multiple call paths invoking dwc3removerequests(), leading to premature freeing of USB requests and subsequent crashes.

Three distinct execution paths interact with dwc3removerequests(): Path 1: Triggered via dwc3gadgetresetinterrupt() during USB reset handling. The call stack includes: - dwc3ep0resetstate() - dwc3ep0stallandrestart() - dwc3ep0outstart() - dwc3removerequests() - dwc3gadgetdelandunmaprequest()

Path 2: Also initiated from dwc3gadgetresetinterrupt(), but through dwc3stopactivetransfers(). The call stack includes: - dwc3stopactivetransfers() - dwc3removerequests() - dwc3gadgetdelandunmaprequest()

Path 3: Occurs independently during adb root execution, which triggers USB function unbind and bind operations. The sequence includes: - gserialdisconnect() - usbepdisable() - dwc3gadgetepdisable() - dwc3removerequests() with -ESHUTDOWN status

Path 3 operates asynchronously and lacks synchronization with Paths 1 and 2. When Path 3 completes, it disables endpoints and frees 'out' requests. If Paths 1 or 2 are still processing these requests, accessing freed memory leads to a crash due to use-after-free conditions.

To fix this added check for request completion and skip processing if already completed and added the request status for ep0 while queue.

Affected Software

244 affected componentsFixes available

Linux Linux kernel

Microsoft azl3 kernel 6.6.117.1-1

Patch available

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ubuntu/linux-lts-xenial*

ubuntu/linux*

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ubuntu/linux-azure*

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ubuntu/linux-lowlatency-hwe-6.8<6.8.0-106.106.1~22.04.1

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ubuntu/linux-vmware*

Remediation

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Fixed in 6.8.0-1049.52
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Fixed in 6.17.0-1018.18
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Fixed in 6.8.0-1049.52.1
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Fixed in 6.8.0-1020.20
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Fixed in 6.17.0-1017.17
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Fixed in 6.8.0-1047.48
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Fixed in 6.17.0-1009.9~24.04.1
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Fixed in 6.8.0-1050.54
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Fixed in 6.17.0-19.19.1~24.04.1
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Fixed in 6.8.0-1028.29
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Fixed in 6.8.0-1017.21
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Fixed in 6.8.0-2040.41
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Fixed in 6.8.1-1045.46
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Fixed in 6.17.0-1008.9~24.04.1
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Fixed in 6.8.0-1050.53+fips1
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Fixed in 6.8.0-1052.58+fips1
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Fixed in 6.8.0-106.106+fips1
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Fixed in 6.8.0-1052.55+fips1
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Fixed in 6.17.0-19.19
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Fixed in 6.17.0-1009.9
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Fixed in 6.17.0-1010.10
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Fixed in 6.17.0-1009.9
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Fixed in 6.17.0-1009.9
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Fixed in 6.17.0-1010.10
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Fixed in 6.17.0-1008.9
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Fixed in 6.17.0-19.19.1

Event History

Dec 16, 2025

CVE Published

via MITRE·03:06 PM

Data Sourced

via MITRE·03:06 PM

Description

Data Sourced

via Red Hat·04:01 PM

DescriptionSeverityAffected Software

Data Sourced

via OSV·04:16 PM

DescriptionSeverityAffected Software

Data Sourced

via NVD·04:16 PM

Description

Dec 18, 2025

Data Sourced

via Microsoft·01:04 AM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2025-68287?

CVE-2025-68287 has a medium severity rating due to its potential impact on system stability.

How do I fix CVE-2025-68287?

To fix CVE-2025-68287, apply the latest Linux kernel patch that addresses the race condition in dwc3_remove_requests().

Which versions of the Linux kernel are affected by CVE-2025-68287?

CVE-2025-68287 affects various versions of the Linux kernel that utilize the dwc3 USB controller.

What types of issues does CVE-2025-68287 cause?

CVE-2025-68287 can lead to system instability and potentially crashes due to race conditions.

Is CVE-2025-68287 specific to any hardware?

CVE-2025-68287 is specific to implementations that utilize the dwc3 USB controller within the Linux kernel.

CVE-2025-68287: usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths

Affected Software

Remediation

Event History

Frequently Asked Questions

What is the severity of CVE-2025-68287?

How do I fix CVE-2025-68287?

Which versions of the Linux kernel are affected by CVE-2025-68287?

What types of issues does CVE-2025-68287 cause?

Is CVE-2025-68287 specific to any hardware?

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