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Review reviewHigh

CVE-2025-37882

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: usb: xhci: Fix isochronous Ring Underrun/Overrun event handling The TRB pointer of these events points at enqueue at the time of error occurrence on xHCI 1.1+ HCs or it's NULL on older ones. By the time we are handling the event, a new TD may be queued at this ring position. I can trigger this race by rising interrupt moderation to increase IRQ handling delay. Similar delay may occur naturally due to system load. If this ever happens after a Missed Service Error, missed TDs will be skipped and the new TD processed as if it...

CVSS
7.8
EPSS
0.26%
17.8% percentile
CISA KEV
Not listed
Published
2025.05.09
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.26%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: usb: xhci: Fix isochronous Ring Underrun/Overrun event handling The TRB pointer of these events points at enqueue at the time of error occurrence on xHCI 1.1+ HCs or it's NULL on older ones. By the time we are handling the event, a new TD may be queued at this ring position. I can trigger this race by rising interrupt moderation to increase IRQ handling delay. Similar delay may occur naturally due to system load. If this ever happens after a Missed Service Error, missed TDs will be skipped and the new TD processed as if it...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 608b973b70f87e9a9bafbfdfa16aab68507aef45 < 16a7a8e6c47fea5c847beb696c8c21a7a44c1915, >= 608b973b70f87e9a9bafbfdfa16aab68507aef45 < 39a080a2925c81b0f1da0add44722ef2b78e5454, >= 608b973b70f87e9a9bafbfdfa16aab68507aef45 < 906dec15b9b321b546fd31a3c99ffc13724c7af4, >= 6.10, < 6.12.26, >= 6.13 < 6.14.5
Fixed versions
6.12.26, 6.14.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2025-37882 — Linux Linux, linux kernel | SECUFOCUS NOW