---
id: CVE-2026-93178
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu/pm/powerplay: bounds-check voltage index in SMU7 lookup

  vddInd and vddcInd fields from VBIOS-parsed tables are used to index into
  voltage lookup tables with…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu/pm/powerplay: bounds-check voltage index in SMU7 lookup

  vddInd and vddcInd fields from VBIOS-parsed tables are used to index into
  voltage lookup tables with…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c82baa28184356a75c0157129f88af42b2e7b695 <
    d9ef085114d1e3c2c1f869c0bdb275a7b358ce8b
  - >-
    Linux >= c82baa28184356a75c0157129f88af42b2e7b695 <
    6f08c001fa6e8212930d694540ae8d9d6d3fb58a
  - >-
    Linux >= c82baa28184356a75c0157129f88af42b2e7b695 <
    ce0d8e72836c9d3710a160ad848b0f1d096075e3
  - >-
    Linux >= c82baa28184356a75c0157129f88af42b2e7b695 <
    745297208d31222f916cc04da313cb737b997935
  - >-
    Linux >= c82baa28184356a75c0157129f88af42b2e7b695 <
    f925d317d84d401d642e537ea18ee12f67cb6983
  - >-
    Linux >= c82baa28184356a75c0157129f88af42b2e7b695 <
    8a3db9f593b643904c6cc6d8a3f211c84ca6cf8a
  - >-
    Linux >= c82baa28184356a75c0157129f88af42b2e7b695 <
    1664327ce797e09e387dc10cbbaa5b8d76558d2c
  - >-
    Linux >= c82baa28184356a75c0157129f88af42b2e7b695 <
    3a8a05477cda6c8293e2b629495b42981dcaba32
  - Linux 4.5
published: '2026-09-17'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T18:18:23.950'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93178'
references:
  - url: 'https://git.kernel.org/stable/c/1664327ce797e09e387dc10cbbaa5b8d76558d2c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3a8a05477cda6c8293e2b629495b42981dcaba32'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6f08c001fa6e8212930d694540ae8d9d6d3fb58a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/745297208d31222f916cc04da313cb737b997935'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8a3db9f593b643904c6cc6d8a3f211c84ca6cf8a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ce0d8e72836c9d3710a160ad848b0f1d096075e3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d9ef085114d1e3c2c1f869c0bdb275a7b358ce8b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f925d317d84d401d642e537ea18ee12f67cb6983'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.0016
epssPercentile: 0.05566
ingestedAt: '2026-09-17T16:21:47.729Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu/pm/powerplay: bounds-check voltage index in SMU7 lookup

vddInd and vddcInd fields from VBIOS-parsed tables are used to index into
voltage lookup tables without a bounds check. Return -EINVAL when any
index is out of range.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.