---
id: CVE-2026-97451
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)

  Add overflow check for Index + Length to prevent integer overflow
  when calculating the truncation le…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)

  Add overflow check for Index + Length to prevent integer overflow
  when calculating the truncation le…
severity: high
cvss: 8.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    6da963ed4c3de0963c23809af3194323328080d2
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    e539003886b34c8109574820b9ba67f0dbe62a12
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    9010ad440f970e684324d507510415a67bc125e4
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    4532c9cf006bb6323957897455b6a5ab45957a19
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    d0d89f2e16a874e0f8fb17045da293e8bedf8b21
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    b96401812cbfbb4803faabeefa1f20b8562268b3
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    0e2021f49e64b3c8a9aa880d0c62a218bfe147ce
  - Linux 2.6.12
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:56.810'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97451'
references:
  - url: 'https://git.kernel.org/stable/c/0e2021f49e64b3c8a9aa880d0c62a218bfe147ce'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4532c9cf006bb6323957897455b6a5ab45957a19'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6da963ed4c3de0963c23809af3194323328080d2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9010ad440f970e684324d507510415a67bc125e4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b96401812cbfbb4803faabeefa1f20b8562268b3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d0d89f2e16a874e0f8fb17045da293e8bedf8b21'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e539003886b34c8109574820b9ba67f0dbe62a12'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97451.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97451'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540400'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97451'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97451'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97451.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00142
epssPercentile: 0.03452
scores:
  nvd: 8.4
  vendor: 5.5
ingestedAt: '2026-09-24T16:47:15.875Z'
---

## Overview

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

ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)

Add overflow check for Index + Length to prevent integer overflow
when calculating the truncation length. This prevents negative
size parameter being passed to memcpy().

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97451.json)