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ReviewHigh

CVE-2026-74549

Linux

In the Linux kernel, the following vulnerability has been resolved: hwmon: (nct6775-core) Prevent access to unsupported weight registers Sashiko reports: During initialization of the nct6116 chip, the driver sets data->pwm_num to 5. However, it assigns several NCT6106 register arrays (such as NCT6106_REG_WEIGHT_DUTY_STEP, NCT6106_REG_WEIGHT_TEMP_SEL, and NCT6106_REG_WEIGHT_TEMP_*) to data->REG_PWM and data->REG_WEIGHT_TEMP. These arrays only contain 3 elements. In nct6775_update_pwm(), the driver iterates up to data->pwm_num. If data->has_pwm has bits 3 or 4 set (which is structurally possi...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.15
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: hwmon: (nct6775-core) Prevent access to unsupported weight registers Sashiko reports: During initialization of the nct6116 chip, the driver sets data->pwm_num to 5. However, it assigns several NCT6106 register arrays (such as NCT6106_REG_WEIGHT_DUTY_STEP, NCT6106_REG_WEIGHT_TEMP_SEL, and NCT6106_REG_WEIGHT_TEMP_*) to data->REG_PWM and data->REG_WEIGHT_TEMP. These arrays only contain 3 elements. In nct6775_update_pwm(), the driver iterates up to data->pwm_num. If data->has_pwm has bits 3 or 4 set (which is structurally possi...

Affected product and versions

Product
Linux
Affected versions
>= 29c7cb485b321c024dedc168bcbb04451176b163 < 0d11b2a10269ace29832f584d207ff3768f79dc5, >= 29c7cb485b321c024dedc168bcbb04451176b163 < 4a77f1d72c6db04cbbfab0250292ac71fdea5f0a, >= 29c7cb485b321c024dedc168bcbb04451176b163 < 513d847f7a95bbdbeaaf55fb942c38992587734f, >= 29c7cb485b321c024dedc168bcbb04451176b163 < 25b528816f5d83be5236dc182692369e8c9402b0, >= 29c7cb485b321c024dedc168bcbb04451176b163 < 689082a4cb166a7ae9729f7b12339e69fdad6c52, >= 29c7cb485b321c024dedc168bcbb04451176b163 < 1b722740ac5c2b2070f9ba922f4e0f227faf0246, >= 29c7cb485b321c024dedc168bcbb04451176b163 < 4ad2972ef0e1bd1018ad7a72661a4636ed7daecc, >= 29c7cb485b321c024dedc168bcbb04451176b163 < d0b704e569ac3b8416d8e02270cdc9bf830ed395, >= 5.4
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available