CVE-2025-38664

Service interruption via unchecked DDP buffer allocation

Published Aug 22, 2025 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel ice driver allows local users to interrupt service during DDP package loading. ice_copy_and_init_pkg passes the unchecked result of devm_kmemdup to ice_init_pkg, which dereferences the buffer after allocation failure. Reachability requires the ice driver and a failed DDP buffer allocation; the documented consequence is limited to availability loss.

CVSS severity5.5
Medium
EPSS probability0.17%
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 Linux kernel ice driver allows local users to interrupt service during DDP package loading. ice_copy_and_init_pkg passes the unchecked result of devm_kmemdup to ice_init_pkg, which dereferences the buffer after allocation failure. Reachability requires the ice driver and a failed DDP buffer allocation; the documented consequence is limited to availability loss.

The record

CVE
CVE-2025-38664
Published
Aug 22, 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. Aug 22, 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

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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=5.4
  2. Affected versionversion=c7648810961682b9388be2dd041df06915647445 <0fde7dccbf4c8a6d7940ecaf4c3d80a12f405dd7
  3. Affected versionversion=c7648810961682b9388be2dd041df06915647445 <1c30093d58cd3d02d8358e2b1f4a06a0aae0bf5b
  4. Affected versionversion=c7648810961682b9388be2dd041df06915647445 <3028f2a4e746b499043bbb8ab816f975473a0535
  5. Affected versionversion=c7648810961682b9388be2dd041df06915647445 <35370d3b44efe194fd5ad55bac987e629597d782
  6. Affected versionversion=c7648810961682b9388be2dd041df06915647445 <435462f8ab2b9c5340a5414ce02f70117d0cfede
  7. Affected versionversion=c7648810961682b9388be2dd041df06915647445 <4ff12d82dac119b4b99b5a78b5af3bf2474c0a36
  8. Affected versionversion=c7648810961682b9388be2dd041df06915647445 <6d640a8ea62435a7f6f89869bee4fa99423d07ca
  9. Affected versionversion=c7648810961682b9388be2dd041df06915647445 <7c5a13c76dd37e9e4f8d48b87376a54f4399ce15

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.4; version=c7648810961682b9388be2dd041df06915647445 <0fde7dccbf4c8a6d7940ecaf4c3d80a12f405dd7; version=c7648810961682b9388be2dd041df06915647445 <1c30093d58cd3d02d8358e2b1f4a06a0aae0bf5b; version=c7648810961682b9388be2dd041df06915647445 <3028f2a4e746b499043bbb8ab816f975473a0535; version=c7648810961682b9388be2dd041df06915647445 <35370d3b44efe194fd5ad55bac987e629597d782; version=c7648810961682b9388be2dd041df06915647445 <435462f8ab2b9c5340a5414ce02f70117d0cfede; version=c7648810961682b9388be2dd041df06915647445 <4ff12d82dac119b4b99b5a78b5af3bf2474c0a36; version=c7648810961682b9388be2dd041df06915647445 <6d640a8ea62435a7f6f89869bee4fa99423d07ca; version=c7648810961682b9388be2dd041df06915647445 <7c5a13c76dd37e9e4f8d48b87376a54f4399ce15

Published CVSS scores

7.3SUSECVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
4.1Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
7.0SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5NIST NVDCVSS: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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