SB20260815242 - Use-after-free in Linux kernel mailbox driver

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Main Vulnerability Database SB20260815242

SB20260815242 - Use-after-free in Linux kernel mailbox driver

Published: August 15, 2026

Security Bulletin ID SB20260815242
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use-after-free (CVE-ID: CVE-2026-72486)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [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]


The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to a use-after-free in the mtk-adsp mailbox driver when handling a late interrupt during device teardown after a failed SOF audio driver initialization. A local attacker can trigger a failed probe condition that leaves the IRQ line active and cause a late interrupt to access freed memory to cause a denial of service.

The crash was observed after probe failure in the SOF audio driver initialization path.


Remediation

Install update from vendor's website.

References