CVE intelligence

CVE-2026-89466

Vulnerability intelligence

Published Sep 11, 2026Sources checked Nov 3, 2026

7.7HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-89466 and is rated High severity with a CVSS score of 7.7. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.1%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-89466?

In the Linux kernel, the following vulnerability has been resolved:

power: supply: qcom_battmgr: terminate the strings from firmware

The qcom_battmgr_sc8280xp_strcpy() takes a Pascal-style string when the firmware sends one. Otherwise it copies all BATTMGR_STRING_LEN bytes and leaves the destination without a terminator.

Those destinations are model_number, serial_number and oem_info, each BATTMGR_STRING_LEN and declared next to each other. They go out to user space as val->strval, which power_supply_format_property() prints with "%s", so a firmware string that fills the whole field makes that read run into the following members.

Use strscpy() so the copy always terminates, the way the SM8350 path already does for the same field.

Source: NVD