SB20260918280 - Incomplete cleanup in Linux kernel mhi host driver
Published: September 18, 2026
Security Bulletin ID
SB20260918280
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incomplete cleanup (CVE-ID: CVE-2026-90402)
CWE-ID: CWE-459 - Incomplete cleanup
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to leave a controller device registered after a sysfs-file creation error.
The vulnerability exists due to incomplete cleanup in mhi_register_controller() when creating the optional trigger_edl sysfs file. A local user can cause sysfs_create_file() to fail during controller registration to leave a controller device registered after an error.
Remediation
Install update from vendor's website.