CVE-2026-72396

Kernel stack overread via unterminated model string

Published Aug 15, 2026 · Updated Aug 15, 2026

An out-of-bounds read in the adm1275 hwmon driver in Linux allows local users to trigger an uninitialized kernel stack read. The probe path stores an SMBus model response without NUL termination, then strncasecmp reads it using the longer known-model length instead of the returned byte count. Reachability requires a bound adm1275-family controller or emulated I2C endpoint that supplies a shorter model string; no direct disclosure path is established.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds read in the adm1275 hwmon driver in Linux allows local users to trigger an uninitialized kernel stack read. The probe path stores an SMBus model response without NUL termination, then strncasecmp reads it using the longer known-model length instead of the returned byte count. Reachability requires a bound adm1275-family controller or emulated I2C endpoint that supplies a shorter model string; no direct disclosure path is established.

The record

CVE
CVE-2026-72396
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1200
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=3.3
  2. Affected versionversion=87102808d03948c825c3bdc48316e48f6422fd7e <36554592e2f5cac16ff8bf73720d38a6d9ef4a20
  3. Affected versionversion=87102808d03948c825c3bdc48316e48f6422fd7e <39a581bd64a0e91112ec8017a2dd4e70c1336e99
  4. Affected versionversion=87102808d03948c825c3bdc48316e48f6422fd7e <553f9517813912a5ab661af5504485d96824a61c
  5. Affected versionversion=87102808d03948c825c3bdc48316e48f6422fd7e <57d583f069fa9d3d0c0831e34b967d1f61edae94
  6. Affected versionversion=87102808d03948c825c3bdc48316e48f6422fd7e <82e4ab03a6ab9b87667410f5143bc484d7a62bdc
  7. Affected versionversion=87102808d03948c825c3bdc48316e48f6422fd7e <93b96e723bdcba6172a5814262be875abcc5d269
  8. Affected versionversion=87102808d03948c825c3bdc48316e48f6422fd7e <aa35cee30686e6be3c890bf741429c5025d55abe
  9. Affected versionversion=87102808d03948c825c3bdc48316e48f6422fd7e <c9e04a52663bc6651c06c2427df088b751062bd6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.3; version=87102808d03948c825c3bdc48316e48f6422fd7e <36554592e2f5cac16ff8bf73720d38a6d9ef4a20; version=87102808d03948c825c3bdc48316e48f6422fd7e <39a581bd64a0e91112ec8017a2dd4e70c1336e99; version=87102808d03948c825c3bdc48316e48f6422fd7e <553f9517813912a5ab661af5504485d96824a61c; version=87102808d03948c825c3bdc48316e48f6422fd7e <57d583f069fa9d3d0c0831e34b967d1f61edae94; version=87102808d03948c825c3bdc48316e48f6422fd7e <82e4ab03a6ab9b87667410f5143bc484d7a62bdc; version=87102808d03948c825c3bdc48316e48f6422fd7e <93b96e723bdcba6172a5814262be875abcc5d269; version=87102808d03948c825c3bdc48316e48f6422fd7e <aa35cee30686e6be3c890bf741429c5025d55abe; version=87102808d03948c825c3bdc48316e48f6422fd7e <c9e04a52663bc6651c06c2427df088b751062bd6

Published CVSS scores

2.4Amazon LinuxCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.5OracleCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Red HatCVSS: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 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-125Out-of-bounds Read
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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