CVE-2025-38157

Kernel crash or out-of-bounds read via beacon event

Published Jul 3, 2025 · Updated May 11, 2026

Divide-by-zero and out-of-bounds read in the Linux ath9k_htc driver allow physically proximate attackers to crash or read kernel memory. ath9k_htc_swba() processes WMI_SWBA_EVENTID before beaconing is enabled and reaches a division by zero. Exploitation requires a malicious USB device managed by ath9k_htc; the resulting failure is limited to a kernel crash or out-of-bounds read.

CVSS severity7.0
High
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

Divide-by-zero and out-of-bounds read in the Linux ath9k_htc driver allow physically proximate attackers to crash or read kernel memory. ath9k_htc_swba() processes WMI_SWBA_EVENTID before beaconing is enabled and reaches a division by zero. Exploitation requires a malicious USB device managed by ath9k_htc; the resulting failure is limited to a kernel crash or out-of-bounds read.

The record

CVE
CVE-2025-38157
Published
Jul 3, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 3, 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=3.0
  2. Affected versionversion=832f6a18fc2aead14954c081ece03b7a5b425f81 <0281c19074976ec48f0078d50530b406ddae75bc
  3. Affected versionversion=832f6a18fc2aead14954c081ece03b7a5b425f81 <40471b23147c86ea3ed97faee79937c618250bd0
  4. Affected versionversion=832f6a18fc2aead14954c081ece03b7a5b425f81 <5482ef9875eaa43f0435e14570e1193823de857e
  5. Affected versionversion=832f6a18fc2aead14954c081ece03b7a5b425f81 <5a85c21f812e02cb00ca07007d88acdd42d08c46
  6. Affected versionversion=832f6a18fc2aead14954c081ece03b7a5b425f81 <7ee3fb6258da8c890a51b514f60d7570dc703605
  7. Affected versionversion=832f6a18fc2aead14954c081ece03b7a5b425f81 <ac4e317a95a1092b5da5b9918b7118759342641c
  8. Affected versionversion=832f6a18fc2aead14954c081ece03b7a5b425f81 <e5ce9df1d68094d37360dbd9b09289d42fa21e54
  9. Affected versionversion=832f6a18fc2aead14954c081ece03b7a5b425f81 <ee5ee646385f5846dcbc881389f3c44a197c402a

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.0; version=832f6a18fc2aead14954c081ece03b7a5b425f81 <0281c19074976ec48f0078d50530b406ddae75bc; version=832f6a18fc2aead14954c081ece03b7a5b425f81 <40471b23147c86ea3ed97faee79937c618250bd0; version=832f6a18fc2aead14954c081ece03b7a5b425f81 <5482ef9875eaa43f0435e14570e1193823de857e; version=832f6a18fc2aead14954c081ece03b7a5b425f81 <5a85c21f812e02cb00ca07007d88acdd42d08c46; version=832f6a18fc2aead14954c081ece03b7a5b425f81 <7ee3fb6258da8c890a51b514f60d7570dc703605; version=832f6a18fc2aead14954c081ece03b7a5b425f81 <ac4e317a95a1092b5da5b9918b7118759342641c; version=832f6a18fc2aead14954c081ece03b7a5b425f81 <e5ce9df1d68094d37360dbd9b09289d42fa21e54; version=832f6a18fc2aead14954c081ece03b7a5b425f81 <ee5ee646385f5846dcbc881389f3c44a197c402a

Published CVSS scores

7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0Oracle LinuxCVSS:3.1/AV:L/AC:H/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.

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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1200Hardware Additions

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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