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.