CVE-2025-37813

System crash via invalid Etron TRB lookahead

Published May 8, 2025 · Updated Aug 5, 2026

NULL pointer dereference in Linux kernel xHCI code allows local users to crash systems with Etron host controllers via USB transfers. The Etron workaround dereferences enqueue + 1 before ring preparation even when enqueue is the segment's final link TRB, producing an invalid pointer. Reachability requires local low-privileged access, an Etron xHCI controller, and transfer timing that places enqueue at the final link TRB; the result is a kernel crash or transfer-ring corruption.

CVSS severity7.8
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux kernel xHCI code allows local users to crash systems with Etron host controllers via USB transfers. The Etron workaround dereferences enqueue + 1 before ring preparation even when enqueue is the segment's final link TRB, producing an invalid pointer. Reachability requires local low-privileged access, an Etron xHCI controller, and transfer timing that places enqueue at the final link TRB; the result is a kernel crash or transfer-ring corruption.

The record

CVE
CVE-2025-37813
Published
May 8, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=4725344ca645a98a9d8e45e25b01a2244de5b8aa
  2. Affected versionversion=5e1c67abc9301d05130b7e267c204e7005503b33 <0624e29c595b05e7a0e6d1c368f0a05799928e30
  3. Affected versionversion=5e1c67abc9301d05130b7e267c204e7005503b33 <1ea050da5562af9b930d17cbbe9632d30f5df43a
  4. Affected versionversion=6.11.11 <6.12
  5. Affected versionversion=6.12.2 <6.12.26
  6. Affected versionversion=6.13
  7. Affected versionversion=6.6.66 <6.6.89
  8. Affected versionversion=9258c9ed32294ce3a4b58c9d92fc49ba030d35c9 <bce3055b08e303e28a8751f6073066f5c33a0744
  9. Affected versionversion=fbc0a0c7718a6cb1dc5e0811a4f88a2b1deedfa1 <142273a49f2c315eabdbdf5a71c15e479b75ca91

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4725344ca645a98a9d8e45e25b01a2244de5b8aa; version=5e1c67abc9301d05130b7e267c204e7005503b33 <0624e29c595b05e7a0e6d1c368f0a05799928e30; version=5e1c67abc9301d05130b7e267c204e7005503b33 <1ea050da5562af9b930d17cbbe9632d30f5df43a; version=6.11.11 <6.12; version=6.12.2 <6.12.26; version=6.13; version=6.6.66 <6.6.89; version=9258c9ed32294ce3a4b58c9d92fc49ba030d35c9 <bce3055b08e303e28a8751f6073066f5c33a0744; version=fbc0a0c7718a6cb1dc5e0811a4f88a2b1deedfa1 <142273a49f2c315eabdbdf5a71c15e479b75ca91

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8Linux kernel CVE teamCVSS: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 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-476NULL Pointer Dereference
T1499.004Application or System Exploitation

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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