CVE-2024-26730

System crash via mismatched temperature-register bounds

Published Apr 3, 2024 · Updated Aug 19, 2026

Out-of-bounds access in the nct6775 hwmon driver in Linux 6.6 through 6.7.6 allows local users to crash the system during probe. The probe loop uses the total temperature-register count to index a shorter configuration-register array, then treats adjacent values as hardware register addresses. Systems with affected NCT6796D-S, NCT6798D, or NCT6799D-R chips reach the mismatch automatically when the driver probes; KASAN can report the access and panic-on-warn can halt the host.

CVSS severity7.3
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the nct6775 hwmon driver in Linux 6.6 through 6.7.6 allows local users to crash the system during probe. The probe loop uses the total temperature-register count to index a shorter configuration-register array, then treats adjacent values as hardware register addresses. Systems with affected NCT6796D-S, NCT6798D, or NCT6799D-R chips reach the mismatch automatically when the driver probes; KASAN can report the access and panic-on-warn can halt the host.

The record

CVE
CVE-2024-26730
Published
Apr 3, 2024
Updated
Aug 19, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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=4283b0e29d58c6b11e2e45a5afcab401da4e7994 <745aa03c513f1ba12cb98495467676f7acf3fffd
  2. Affected versionversion=6.6
  3. Affected versionversion=b7f1f7b2523a6a4382f12fe953380b847b80e09d <c196387820c9214c5ceaff56d77303c82514b8b1
  4. Affected versionversion=b7f1f7b2523a6a4382f12fe953380b847b80e09d <d56e460e19ea8382f813eb489730248ec8d7eb73
  5. Affected versionversion=b7f1f7b2523a6a4382f12fe953380b847b80e09d <f006c45a3ea424f8f6c8e4b9283bc245ce2a4d0f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4283b0e29d58c6b11e2e45a5afcab401da4e7994 <745aa03c513f1ba12cb98495467676f7acf3fffd; version=6.6; version=b7f1f7b2523a6a4382f12fe953380b847b80e09d <c196387820c9214c5ceaff56d77303c82514b8b1; version=b7f1f7b2523a6a4382f12fe953380b847b80e09d <d56e460e19ea8382f813eb489730248ec8d7eb73; version=b7f1f7b2523a6a4382f12fe953380b847b80e09d <f006c45a3ea424f8f6c8e4b9283bc245ce2a4d0f

Published CVSS scores

7.0NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/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-787Out-of-bounds Write

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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