SB20260816521 - NULL pointer dereference in Linux kernel pmdomain mediatek driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-72008)

CWE-ID: CWE-476 - NULL Pointer Dereference

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 improper handling of null pointer dereference conditions in the MediaTek power domain driver when probing or cleaning up HW_VOTER type power domains. A local attacker can trigger a failed probe or removal path to cause a denial of service.

The issue occurs because the driver used DIRECT_CTL domain status and power-off logic for HW_VOTER domains in certain probe and cleanup paths.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/36c2d7728540252474752172027f0113028ab00c
• https://git.kernel.org/stable/c/a4876f11aa1d076802676e23f8af500706e780e3