---
id: CVE-2026-81012
title: >-
  kernel: platform/x86: hp-bioscfg: fix off-by-one write in
  hp_get_string_from_buffer() (CVE-2026-81012)
summary: >-
  A flaw was found in the Linux kernel's hp-bioscfg component. The
  `hp_get_string_from_buffer()` function contains an off-by-one write
  vulnerability. This occurs because the NUL terminator can be written one byte
  beyond the allocated buffer,…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-193
vendor: Red Hat
product: Linux
affected:
  - >-
    Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a <
    8f5aa1506cdddea6b33584c2445b9ce99eeddb64
  - >-
    Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a <
    3cc772d0154799961f032e5a992d4a50523e291a
  - >-
    Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a <
    b15b334fbc3c0c46440f8a892ebf62164fca23d6
  - >-
    Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a <
    ddf98cf33529714b3ba1a158afb1db5b0f759a1a
  - >-
    Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a <
    dc03f05e419f3460342fb7564884f244622634b6
  - Linux 6.6
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T21:17:50+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81012.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81012.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-81012'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532131'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-81012'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81012'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-81012.mbox
  - url: 'https://git.kernel.org/stable/c/8f5aa1506cdddea6b33584c2445b9ce99eeddb64'
  - url: 'https://git.kernel.org/stable/c/3cc772d0154799961f032e5a992d4a50523e291a'
  - url: 'https://git.kernel.org/stable/c/b15b334fbc3c0c46440f8a892ebf62164fca23d6'
  - url: 'https://git.kernel.org/stable/c/ddf98cf33529714b3ba1a158afb1db5b0f759a1a'
  - url: 'https://git.kernel.org/stable/c/dc03f05e419f3460342fb7564884f244622634b6'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00196
epssPercentile: 0.08246
scores:
  vendor: 5.5
  cna: 8.4
ingestedAt: '2026-09-14T15:23:07.453Z'
---

## Overview

A flaw was found in the Linux kernel's hp-bioscfg component. The `hp_get_string_from_buffer()` function contains an off-by-one write vulnerability. This occurs because the NUL terminator can be written one byte beyond the allocated buffer, leading to a buffer overflow. An attacker could potentially exploit this to cause memory corruption.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81012.json)

**kernel: platform/x86: hp-bioscfg: fix off-by-one write in hp_get_string_from_buffer()** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.

Not 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

## Remediation

Refer to the advisory for fix availability.