---
title: "CVE-2026-90137: Linux kernel - Out of Bounds Read"
description: "Linux kernel platform/x86 hp-bioscfg contains an out-of-bounds read caused by insufficient bounds checking in password encoding parsing, letting attackers with malformed ACPI packages cause memory access violations, exploit requires crafted ACPI package."
url: https://panop.io/threat-heartbeat/CVE-2026-90137/
---

# CVE-2026-90137 Linux kernel - Out of Bounds Read

Linux kernel platform/x86 hp-bioscfg contains an out-of-bounds read caused by insufficient bounds checking in password encoding parsing, letting attackers with malformed ACPI packages cause memory access violations, exploit requires crafted ACPI package.

CVSS base score 7.7 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.18% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90137)

## Details

Type

Out of Bounds Read

Impact

Information Disclosure, Denial Of Service

CVSS vector

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

Published

17 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version with the fix for hp-bioscfg password encoding bounds check.

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-2026-90137](https://nvd.nist.gov/vuln/detail/CVE-2026-90137)
- [https://git.kernel.org/stable/c/59fe8491ddaa03a510b352552e6ee291e7ce45d3](https://git.kernel.org/stable/c/59fe8491ddaa03a510b352552e6ee291e7ce45d3)
- [https://git.kernel.org/stable/c/8a7499b8fd34438c1b11964e0e7ef5bd590fec92](https://git.kernel.org/stable/c/8a7499b8fd34438c1b11964e0e7ef5bd590fec92)
- [https://git.kernel.org/stable/c/ace1ba5fca0ab775b3641e154bcbc3ccde26a71a](https://git.kernel.org/stable/c/ace1ba5fca0ab775b3641e154bcbc3ccde26a71a)
- [https://git.kernel.org/stable/c/c224759555a13735b0d67561d818cefe00c3309a](https://git.kernel.org/stable/c/c224759555a13735b0d67561d818cefe00c3309a)
- [https://git.kernel.org/stable/c/e213939ed9e6e6badf7aa48c4c8dd9a9cdf00615](https://git.kernel.org/stable/c/e213939ed9e6e6badf7aa48c4c8dd9a9cdf00615)

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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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