---
title: "CVE-2026-90012: Linux Kernel spi - Denial of Service & Privilege Escalation"
description: "Linux kernel spi subsystem contains a buffer management vulnerability caused by improper DMA mapping ownership handling in __spi_map_msg(), letting attackers trigger kernel oops or memory corruption, exploit requires kernel-level access."
url: https://panop.io/threat-heartbeat/CVE-2026-90012/
---

# CVE-2026-90012 Linux Kernel spi - Denial of Service & Privilege Escalation

Linux kernel spi subsystem contains a buffer management vulnerability caused by improper DMA mapping ownership handling in \_\_spi\_map\_msg(), letting attackers trigger kernel oops or memory corruption, exploit requires kernel-level access.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.63% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90012)

## Details

Type

Denial of Service

Impact

Denial Of Service, Privilege Escalation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/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 DMA mapping ownership in spi subsystem.

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-2026-90012](https://nvd.nist.gov/vuln/detail/CVE-2026-90012)
- [https://git.kernel.org/stable/c/367cea239fc93094e5c16a72724800e0358f5c46](https://git.kernel.org/stable/c/367cea239fc93094e5c16a72724800e0358f5c46)
- [https://git.kernel.org/stable/c/5def8b6aaad44603740786262b95b6f77df52a1c](https://git.kernel.org/stable/c/5def8b6aaad44603740786262b95b6f77df52a1c)
- [https://git.kernel.org/stable/c/a38051fa2ddedbc8ec15292c55e276880ec5b9a4](https://git.kernel.org/stable/c/a38051fa2ddedbc8ec15292c55e276880ec5b9a4)
- [https://git.kernel.org/stable/c/cc8354213ad6bd5fb8cc05a3fa3701188d086626](https://git.kernel.org/stable/c/cc8354213ad6bd5fb8cc05a3fa3701188d086626)

[← All CVEs](https://panop.io/threat-heartbeat/)

## 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

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)