SB2026091255 - Memory leak in Linux kernel gadget function driver
Published: September 12, 2026
Security Bulletin ID
SB2026091255
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2026-89735)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a memory leak.
The vulnerability exists due to improper resource cleanup in the Linux kernel MIDI 2 USB gadget function's configfs default groups when tearing down function instances or cleaning up endpoint options. A local user can tear down a MIDI 2 gadget function instance or clean up endpoint options to cause a memory leak.
Remediation
Install update from vendor's website.