---
title: "CVE-2026-80931: Linux Kernel w1: ds28e17 - Out of Bounds Read"
description: "Linux kernel w1: ds28e17 contains a buffer overflow caused by improper length validation in I2C block read, letting a malicious device cause out-of-bounds read, exploit requires a malicious I2C slave device."
url: https://panop.io/threat-heartbeat/CVE-2026-80931/
---

# CVE-2026-80931 Linux Kernel w1: ds28e17 - Out of Bounds Read

Linux kernel w1: ds28e17 contains a buffer overflow caused by improper length validation in I2C block read, letting a malicious device cause out-of-bounds read, exploit requires a malicious I2C slave device.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.13% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-80931)

## 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:H/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-2026-80931](https://nvd.nist.gov/vuln/detail/CVE-2026-80931)
- [https://git.kernel.org/stable/c/6df05f630c84a109736642362e452089886f9974](https://git.kernel.org/stable/c/6df05f630c84a109736642362e452089886f9974)
- [https://git.kernel.org/stable/c/ae0c79a8527044e54d81fd5a3b49ce6177633758](https://git.kernel.org/stable/c/ae0c79a8527044e54d81fd5a3b49ce6177633758)
- [https://git.kernel.org/stable/c/cb55c5da9828f77db2a2701316949d4de1e9b773](https://git.kernel.org/stable/c/cb55c5da9828f77db2a2701316949d4de1e9b773)
- [https://git.kernel.org/stable/c/0f6496b34cc2919420f303b2aabdd9f71e084b56](https://git.kernel.org/stable/c/0f6496b34cc2919420f303b2aabdd9f71e084b56)
- [https://git.kernel.org/stable/c/1d08877fc37e90945df38d255715bd1d6c052d46](https://git.kernel.org/stable/c/1d08877fc37e90945df38d255715bd1d6c052d46)
- [https://git.kernel.org/stable/c/b30c021c6073559ea6851b522d8a17a524a27b4a](https://git.kernel.org/stable/c/b30c021c6073559ea6851b522d8a17a524a27b4a)
- [https://git.kernel.org/stable/c/bf76d61e118b7044600a65775a3bf8adc2c6823d](https://git.kernel.org/stable/c/bf76d61e118b7044600a65775a3bf8adc2c6823d)
- [https://git.kernel.org/stable/c/169ae5e65e5aaf213b6a578f6478a9fd2e523606](https://git.kernel.org/stable/c/169ae5e65e5aaf213b6a578f6478a9fd2e523606)

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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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