---
id: CVE-2025-37977
title: 'scsi: ufs: exynos: Disable iocc if dma-coherent property isn''t set'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: ufs: exynos: Disable iocc if dma-coherent property isn't set

  If dma-coherent property isn't set then descriptors are non-cacheable
  and the iocc shareability bits…
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'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= cc52e15397cc5dc773d3c6792b98352d3209f93f <
    b101fc9ac18d1ac434b703839a5117342a591792
  - >-
    Linux >= cc52e15397cc5dc773d3c6792b98352d3209f93f <
    869749e48115ef944eeabec8e84138908471fa51
  - >-
    Linux >= cc52e15397cc5dc773d3c6792b98352d3209f93f <
    f0c6728a6f2e269ebb234a9b5bb6c2c24aafeb51
  - >-
    Linux >= cc52e15397cc5dc773d3c6792b98352d3209f93f <
    f92bb7436802f8eb7ee72dc911a33c8897fde366
  - Linux 5.16
published: '2025-05-20'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:36:36.163Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-37977'
references:
  - url: 'https://git.kernel.org/stable/c/b101fc9ac18d1ac434b703839a5117342a591792'
  - url: 'https://git.kernel.org/stable/c/869749e48115ef944eeabec8e84138908471fa51'
  - url: 'https://git.kernel.org/stable/c/f0c6728a6f2e269ebb234a9b5bb6c2c24aafeb51'
  - url: 'https://git.kernel.org/stable/c/f92bb7436802f8eb7ee72dc911a33c8897fde366'
tags:
  - cve.org
epss: 0.00255
epssPercentile: 0.16965
ingestedAt: '2026-10-21T12:48:53.710Z'
---

## Overview

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

scsi: ufs: exynos: Disable iocc if dma-coherent property isn't set

If dma-coherent property isn't set then descriptors are non-cacheable
and the iocc shareability bits should be disabled. Without this UFS can
end up in an incompatible configuration and suffer from random cache
related stability issues.

## Affected

- `Linux >= cc52e15397cc5dc773d3c6792b98352d3209f93f < b101fc9ac18d1ac434b703839a5117342a591792`
- `Linux >= cc52e15397cc5dc773d3c6792b98352d3209f93f < 869749e48115ef944eeabec8e84138908471fa51`
- `Linux >= cc52e15397cc5dc773d3c6792b98352d3209f93f < f0c6728a6f2e269ebb234a9b5bb6c2c24aafeb51`
- `Linux >= cc52e15397cc5dc773d3c6792b98352d3209f93f < f92bb7436802f8eb7ee72dc911a33c8897fde366`
- `Linux 5.16`

## Remediation

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