SB2026062555 - Memory leak in Linux kernel mediatek mt76 driver
Published: June 25, 2026
Security Bulletin ID
SB2026062555
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2026-53104)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a memory leak in the mt76 dma rx queue cleanup logic when destroying the device during module unload. A local user can trigger device cleanup to cause a denial of service.
The issue affects MT76 rx queues, including WED RRO queues that have an associated page_pool even when not associated to a NAPI.
Remediation
Install update from vendor's website.