---
id: CVE-2026-81013
title: >-
  kernel: platform/x86: hp-bioscfg: fix heap OOB read on empty password write
  (CVE-2026-81013)
summary: >-
  A flaw was found in the hp-bioscfg component of the Linux kernel. A local user
  could trigger a heap out-of-bounds read by writing an empty string to the
  current_password or new_password fields. This occurs because the
  validate_password_inp…
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-125
vendor: Red Hat
product: Linux
affected:
  - >-
    Linux >= 8646a3b5ee3a5b384a22a721f37c24274d974045 <
    21243c15e1d31f0df1517435e3a7784747f19043
  - >-
    Linux >= 8646a3b5ee3a5b384a22a721f37c24274d974045 <
    cecb8154bd5fa6c8ddbd1a4e8216bbc0f0eb9828
  - >-
    Linux >= 8646a3b5ee3a5b384a22a721f37c24274d974045 <
    0f9aad08424882dd5714b53d29ae044060890752
  - >-
    Linux >= 8646a3b5ee3a5b384a22a721f37c24274d974045 <
    b699e5c1f63a9e79946c35598c8a6f7af2c356b8
  - >-
    Linux >= 8646a3b5ee3a5b384a22a721f37c24274d974045 <
    2b2ec354f905c14e3270e8ec3ab50f7d8ad73bab
  - Linux 6.6
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T21:17:54+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81013.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81013.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-81013'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532351'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-81013'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81013'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-81013.mbox
  - url: 'https://git.kernel.org/stable/c/21243c15e1d31f0df1517435e3a7784747f19043'
  - url: 'https://git.kernel.org/stable/c/cecb8154bd5fa6c8ddbd1a4e8216bbc0f0eb9828'
  - url: 'https://git.kernel.org/stable/c/0f9aad08424882dd5714b53d29ae044060890752'
  - url: 'https://git.kernel.org/stable/c/b699e5c1f63a9e79946c35598c8a6f7af2c356b8'
  - url: 'https://git.kernel.org/stable/c/2b2ec354f905c14e3270e8ec3ab50f7d8ad73bab'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00225
epssPercentile: 0.1167
ingestedAt: '2026-09-14T15:23:07.454Z'
---

## Overview

A flaw was found in the hp-bioscfg component of the Linux kernel. A local user could trigger a heap out-of-bounds read by writing an empty string to the current_password or new_password fields. This occurs because the validate_password_input() function attempts to access memory before the allocated buffer when processing an empty input. This vulnerability could lead to information disclosure by reading one byte of data past the buffer.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81013.json)

**kernel: platform/x86: hp-bioscfg: fix heap OOB read on empty password write** — 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.