Improper Null Termination in Linux kernel - CVE-2026-89466
Published: September 12, 2026
Vulnerability identifier: #VU149347
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89466
CWE-ID: CWE-170
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to improper null termination in qcom_battmgr_sc8280xp_strcpy() when copying non-Pascal-style strings from firmware. A local user can read exposed power supply properties containing a full-length firmware string to disclose sensitive information.
The affected fields are model_number, serial_number, and oem_info.
Affected software
Linux kernel
How to mitigate CVE-2026-89466
Install security update from vendor's repository.