---
title: "CVE-2026-90008: Linux Kernel - Out of Bounds Read/Write"
description: "Linux kernel scsi megaraid_sas contains a buffer overrun vulnerability caused by unchecked PRP list size in megasas_make_prp_nvme, letting attackers cause memory corruption or kernel crash, exploit requires crafted large NVMe requests."
url: https://panop.io/threat-heartbeat/CVE-2026-90008/
---

# CVE-2026-90008 Linux Kernel - Out of Bounds Read/Write

Linux kernel scsi megaraid\_sas contains a buffer overrun vulnerability caused by unchecked PRP list size in megasas\_make\_prp\_nvme, letting attackers cause memory corruption or kernel crash, exploit requires crafted large NVMe requests.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90008)

## Details

Type

Out of Bounds Read/Write

Impact

Denial Of Service, Privilege Escalation

CVSS vector

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

Published

16 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for megaraid\_sas PRP list size limit.

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-2026-90008](https://nvd.nist.gov/vuln/detail/CVE-2026-90008)
- [https://git.kernel.org/stable/c/4dd118d06dec9efe5065ac7897bdc18f404a3af4](https://git.kernel.org/stable/c/4dd118d06dec9efe5065ac7897bdc18f404a3af4)
- [https://git.kernel.org/stable/c/af8c27375733fb6a6df9fa484cda77cc3dd0cb80](https://git.kernel.org/stable/c/af8c27375733fb6a6df9fa484cda77cc3dd0cb80)
- [https://git.kernel.org/stable/c/4bb34769ef44ab3770b89e4055de6af4a458bec9](https://git.kernel.org/stable/c/4bb34769ef44ab3770b89e4055de6af4a458bec9)

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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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