CVE-2025-38487

Kernel crash via uninitialized channel deregistration

Published Jul 28, 2025 · Updated May 11, 2026

NULL pointer dereference in the ASPEED LPC snoop driver allows local users to crash the Linux kernel through driver unbinding. The removal path passed every channel to misc_deregister even when an optional channel had never been enabled or initialized. Reachability requires local access to the platform-driver unbind interface, and the consequence is an availability-only kernel crash.

CVSS severity5.5
Medium
EPSS probability0.15%
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 the ASPEED LPC snoop driver allows local users to crash the Linux kernel through driver unbinding. The removal path passed every channel to misc_deregister even when an optional channel had never been enabled or initialized. Reachability requires local access to the platform-driver unbind interface, and the consequence is an availability-only kernel crash.

The record

CVE
CVE-2025-38487
Published
Jul 28, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 28, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record 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=4.13
  2. Affected versionversion=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <166afe964e8433d52c641f5d1c09102bacee9a92
  3. Affected versionversion=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <329a80adc0e5f815d0514a6d403aaaf0995cd9be
  4. Affected versionversion=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <56448e78a6bb4e1a8528a0e2efe94eff0400c247
  5. Affected versionversion=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <62e51f51d97477ea4e78c82e7076a171dac86c75
  6. Affected versionversion=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <9e1d2b97f5e2a36a2fd30a8bd30ead9dac5e3a51
  7. Affected versionversion=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <ac10ed9862104936a412f8b475c869e99f048448
  8. Affected versionversion=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <b361598b7352f02456619a6105c7da952ef69f8f
  9. Affected versionversion=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <dc5598482e2d3b234f6d72d6f5568e24f603e51a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.13; version=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <166afe964e8433d52c641f5d1c09102bacee9a92; version=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <329a80adc0e5f815d0514a6d403aaaf0995cd9be; version=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <56448e78a6bb4e1a8528a0e2efe94eff0400c247; version=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <62e51f51d97477ea4e78c82e7076a171dac86c75; version=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <9e1d2b97f5e2a36a2fd30a8bd30ead9dac5e3a51; version=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <ac10ed9862104936a412f8b475c869e99f048448; version=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <b361598b7352f02456619a6105c7da952ef69f8f; version=9f4f9ae81d0affc182f54dd00285ddb90e0b3ae1 <dc5598482e2d3b234f6d72d6f5568e24f603e51a

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5UbuntuCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1499Endpoint Denial of Service

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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