---
id: CVE-2026-81011
title: >-
  kernel: platform/x86: hp-bioscfg: pass validated element count to package
  parsers (CVE-2026-81011)
summary: >-
  A flaw was found in the Linux kernel's hp-bioscfg module. The module's package
  parsers incorrectly determine the number of elements in a package, using a
  value derived from a name string rather than the true package size. While
  currently p…
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 >= a34fc329b1895fc8a6eb12099adc47009421ba6a <
    467e53f231f77a1677191b8cdabdaf1448439d55
  - >-
    Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a <
    436017808c7cbcdb5e49b2142090d4391e3de9a6
  - >-
    Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a <
    a38127df99ae8b1851560b35b837c9952416143a
  - >-
    Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a <
    400cbc3ccc88a5ad37cd85056224635ce9eba018
  - >-
    Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a <
    e0ddfd77c0c320b7d12b6c9169303b140b798775
  - Linux 6.6
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T21:17:47+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81011.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81011.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-81011'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532502'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-81011'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81011'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-81011.mbox
  - url: 'https://git.kernel.org/stable/c/467e53f231f77a1677191b8cdabdaf1448439d55'
  - url: 'https://git.kernel.org/stable/c/436017808c7cbcdb5e49b2142090d4391e3de9a6'
  - url: 'https://git.kernel.org/stable/c/a38127df99ae8b1851560b35b837c9952416143a'
  - url: 'https://git.kernel.org/stable/c/400cbc3ccc88a5ad37cd85056224635ce9eba018'
  - url: 'https://git.kernel.org/stable/c/e0ddfd77c0c320b7d12b6c9169303b140b798775'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00166
epssPercentile: 0.05157
scores:
  vendor: 5.5
  cna: 7.1
ingestedAt: '2026-09-14T15:23:07.454Z'
---

## Overview

A flaw was found in the Linux kernel's hp-bioscfg module. The module's package parsers incorrectly determine the number of elements in a package, using a value derived from a name string rather than the true package size. While currently prevented by existing validation, a future change to the kernel will allow shorter packages, enabling a local attacker to craft a malicious package. This could result in an out-of-bounds heap read, potentially leading to information disclosure or system instability.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81011.json)

**kernel: platform/x86: hp-bioscfg: pass validated element count to package parsers** — 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.