---
id: CVE-2025-40356
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  spi: rockchip-sfc: Fix DMA-API usage

  Use DMA-API dma_map_single() call for getting the DMA address of the
  transfer buffer instead of hacking with virt_to_phys().

  This…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  spi: rockchip-sfc: Fix DMA-API usage

  Use DMA-API dma_map_single() call for getting the DMA address of the
  transfer buffer instead of hacking with virt_to_phys().

  This…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
published: '2025-12-16'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-40356'
references:
  - url: 'https://git.kernel.org/stable/c/22810d4cb0e8a7d51b24527e73beac60afc1c693'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ee795e82e10197c070efd380dc9615c73dffad6c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00144
epssPercentile: 0.03264
ingestedAt: '2026-10-14T13:30:58.439Z'
---

## Overview

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

spi: rockchip-sfc: Fix DMA-API usage

Use DMA-API dma_map_single() call for getting the DMA address of the
transfer buffer instead of hacking with virt_to_phys().

This fixes the following DMA-API debug warning:
------------[ cut here ]------------
DMA-API: rockchip-sfc fe300000.spi: device driver tries to sync DMA memory it has not allocated [device address=0x000000000cf70000] [size=288 bytes]
WARNING: kernel/dma/debug.c:1106 at check_sync+0x1d8/0x690, CPU#2: systemd-udevd/151
Modules linked in: ...
Hardware name: Hardkernel ODROID-M1 (DT)
pstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : check_sync+0x1d8/0x690
lr : check_sync+0x1d8/0x690
..
Call trace:
 check_sync+0x1d8/0x690 (P)
 debug_dma_sync_single_for_cpu+0x84/0x8c
 __dma_sync_single_for_cpu+0x88/0x234
 rockchip_sfc_exec_mem_op+0x4a0/0x798 [spi_rockchip_sfc]
 spi_mem_exec_op+0x408/0x498
 spi_nor_read_data+0x170/0x184
 spi_nor_read_sfdp+0x74/0xe4
 spi_nor_parse_sfdp+0x120/0x11f0
 spi_nor_sfdp_init_params_deprecated+0x3c/0x8c
 spi_nor_scan+0x690/0xf88
 spi_nor_probe+0xe4/0x304
 spi_mem_probe+0x6c/0xa8
 spi_probe+0x94/0xd4
 really_probe+0xbc/0x298
 ...

## Remediation

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