CVE-2026-89466

Last refreshed2026-10-19

Status: UPDATED | Advisory ID: CVE-2026-89466

Key Details

CVE	CVE-2026-89466
CVSS Score / Version	7.7 (High) / CVSS v3.1
Updated	2026-10-19
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is none; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-89466
CVE	https://www.cve.org/CVERecord?id=CVE-2026-89466

Source

Reference

NVD

CVE