---
id: CVE-2026-46308
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()

  In scpsys_get_bus_protection_legacy(), of_find_node_with_property()
  returns a device node …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()

  In scpsys_get_bus_protection_legacy(), of_find_node_with_property()
  returns a device node …
severity: none
published: '2026-06-08'
updated: '2026-07-07'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46308'
references:
  - url: 'https://git.kernel.org/stable/c/38d8410021b55d226847b2ac8d189d89fe5a8866'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cb27e43c0511e9e1ca8818d231656070b11c18cf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ec1fcddb3117d9452210e838fd37389ee61e10e8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00168
epssPercentile: 0.05396
ingestedAt: '2026-07-08T12:51:00.709Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()

In scpsys_get_bus_protection_legacy(), of_find_node_with_property()
returns a device node with its reference count incremented. The function
then calls of_node_put(node) before checking whether
syscon_regmap_lookup_by_phandle() returns an error. If an error occurs,
dev_err_probe() dereferences the node pointer to print diagnostic
information, but the node memory may have already been freed due to the
earlier of_node_put(), leading to a use-after-free vulnerability.

Fix this by moving the of_node_put() call after the error check, ensuring
the node is still valid when accessed in the error path.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.