CVE-2025-38545Network attack vector

Service interruption via undersized receive buffer allocation

Published Aug 16, 2025 · Updated Aug 5, 2026

Memory-allocation error in the TI AM65 CPSW NUSS driver in Linux allows remote attackers to interrupt service via Ethernet traffic. The receive path gives build_skb() a page-backed buffer without reserving trailing space for skb_shared_info, placing that metadata beyond the allocated area. Exposure requires the TI AM65 CPSW NUSS Ethernet driver; the published record establishes service interruption but does not disclose whether the host hangs or crashes.

CVSS severity7.5
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory-allocation error in the TI AM65 CPSW NUSS driver in Linux allows remote attackers to interrupt service via Ethernet traffic. The receive path gives build_skb() a page-backed buffer without reserving trailing space for skb_shared_info, placing that metadata beyond the allocated area. Exposure requires the TI AM65 CPSW NUSS Ethernet driver; the published record establishes service interruption but does not disclose whether the host hangs or crashes.

The record

CVE
CVE-2025-38545
Published
Aug 16, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 16, 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

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=6.10
  2. Affected versionversion=8acacc40f7337527ff84cd901ed2ef0a2b95b2b6 <02c4d6c26f1f662da8885b299c224ca6628ad232
  3. Affected versionversion=8acacc40f7337527ff84cd901ed2ef0a2b95b2b6 <7d6ca0c8c0caf9a13cae2de763bb1f2a9ea7eabb
  4. Affected versionversion=8acacc40f7337527ff84cd901ed2ef0a2b95b2b6 <fc2fffa2facac15ce711e95f98f954426e025bc5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.10; version=8acacc40f7337527ff84cd901ed2ef0a2b95b2b6 <02c4d6c26f1f662da8885b299c224ca6628ad232; version=8acacc40f7337527ff84cd901ed2ef0a2b95b2b6 <7d6ca0c8c0caf9a13cae2de763bb1f2a9ea7eabb; version=8acacc40f7337527ff84cd901ed2ef0a2b95b2b6 <fc2fffa2facac15ce711e95f98f954426e025bc5

Published CVSS scores

7.5Linux CNACVSS:3.1/AV:N/AC:L/PR:N/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

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
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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