SB20260918131 - Memory leak in Linux kernel firmware arm_scmi driver

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Main Vulnerability Database SB20260918131

SB20260918131 - Memory leak in Linux kernel firmware arm_scmi driver

Published: September 18, 2026

Security Bulletin ID SB20260918131
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Memory leak (CVE-ID: CVE-2026-93084)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to leak SCMI instance user references.

The vulnerability exists due to improper resource cleanup in the SCMI bus notifier when a protocol driver probe fails after an SCMI handle has been acquired. A local user can trigger a failed protocol-device bind to leak SCMI instance user references.

If a device dependency link cannot be created, a concurrent parent unbind can tear down the SCMI instance while the child retains a handle.


Remediation

Install update from vendor's website.

References