---
title: "CVE-2026-81011: Linux kernel - Out-of-Bounds Read"
description: "Linux kernel platform/x86 hp-bioscfg contains an out-of-bounds read caused by forwarding incorrect element count to package parsers, letting attackers potentially cause heap read beyond array bounds, exploit requires crafted ACPI package data."
url: https://panop.io/threat-heartbeat/CVE-2026-81011/
---

# CVE-2026-81011 Linux kernel - Out-of-Bounds Read

Linux kernel platform/x86 hp-bioscfg contains an out-of-bounds read caused by forwarding incorrect element count to package parsers, letting attackers potentially cause heap read beyond array bounds, exploit requires crafted ACPI package data.

CVSS base score 7.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.12% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-81011)

## Details

Type

Out-of-Bounds Read

Impact

Information Disclosure, Denial Of Service

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Published

11 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-81011](https://nvd.nist.gov/vuln/detail/CVE-2026-81011)
- [https://git.kernel.org/stable/c/400cbc3ccc88a5ad37cd85056224635ce9eba018](https://git.kernel.org/stable/c/400cbc3ccc88a5ad37cd85056224635ce9eba018)
- [https://git.kernel.org/stable/c/436017808c7cbcdb5e49b2142090d4391e3de9a6](https://git.kernel.org/stable/c/436017808c7cbcdb5e49b2142090d4391e3de9a6)
- [https://git.kernel.org/stable/c/a38127df99ae8b1851560b35b837c9952416143a](https://git.kernel.org/stable/c/a38127df99ae8b1851560b35b837c9952416143a)
- [https://git.kernel.org/stable/c/e0ddfd77c0c320b7d12b6c9169303b140b798775](https://git.kernel.org/stable/c/e0ddfd77c0c320b7d12b6c9169303b140b798775)
- [https://git.kernel.org/stable/c/467e53f231f77a1677191b8cdabdaf1448439d55](https://git.kernel.org/stable/c/467e53f231f77a1677191b8cdabdaf1448439d55)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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