---
title: "CVE-2026-89466: Linux kernel power supply qcom_battmgr - Information Disclosure"
description: "Linux kernel power supply qcom_battmgr contains a buffer over-read caused by missing string termination in qcom_battmgr_sc8280xp_strcpy(), letting attackers cause information disclosure via user space reads, exploit requires crafted firmware string."
url: https://panop.io/threat-heartbeat/CVE-2026-89466/
---

# CVE-2026-89466 Linux kernel power supply qcom\_battmgr - Information Disclosure

Linux kernel power supply qcom\_battmgr contains a buffer over-read caused by missing string termination in qcom\_battmgr\_sc8280xp\_strcpy(), letting attackers cause information disclosure via user space reads, exploit requires crafted firmware string.

CVSS base score 7.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89466)

## Details

Type

Information Disclosure

Impact

Information Disclosure

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/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-2026-89466](https://nvd.nist.gov/vuln/detail/CVE-2026-89466)
- [https://git.kernel.org/stable/c/0e70a9b0d16acf7adebc4f386178a95da27c0027](https://git.kernel.org/stable/c/0e70a9b0d16acf7adebc4f386178a95da27c0027)
- [https://git.kernel.org/stable/c/6cc6c28c9ab6e8ecf901397717a5b391b828cdaf](https://git.kernel.org/stable/c/6cc6c28c9ab6e8ecf901397717a5b391b828cdaf)
- [https://git.kernel.org/stable/c/ab1112df8f4ffa88cb024dd370c432ced80f77d8](https://git.kernel.org/stable/c/ab1112df8f4ffa88cb024dd370c432ced80f77d8)
- [https://git.kernel.org/stable/c/ee053561e21ce1e1741dd64ca5ddcdb92e40edc1](https://git.kernel.org/stable/c/ee053561e21ce1e1741dd64ca5ddcdb92e40edc1)
- [https://git.kernel.org/stable/c/c06028db620854b11ad81b04b0a4e1ead930cb76](https://git.kernel.org/stable/c/c06028db620854b11ad81b04b0a4e1ead930cb76)

[← 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)