---
id: CVE-2026-31410
title: 'ksmbd: use volume UUID in FS_OBJECT_ID_INFORMATION'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ksmbd: use volume UUID in FS_OBJECT_ID_INFORMATION

  Use sb->s_uuid for a proper volume identifier as the primary choice.
  For filesystems that do not provide a UUID, fal…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <
    1df0123f96f377282feaae24d8e561fff4a6541f
  - >-
    Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <
    ce00616bc1df675bfdacc968f2bf7c51f4669227
  - >-
    Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <
    3d80ebe6d1b7bc9ad20fd9b0c1a0c56d804f8a0a
  - >-
    Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <
    c283a6ffe6d5d6e5594d991286b9ce15951572e1
  - >-
    Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <
    3a64125730cabc34fccfbc230c2667c2e14f7308
  - Linux 5.15
published: '2026-04-06'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:39:16.902Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-31410'
references:
  - url: 'https://git.kernel.org/stable/c/1df0123f96f377282feaae24d8e561fff4a6541f'
  - url: 'https://git.kernel.org/stable/c/ce00616bc1df675bfdacc968f2bf7c51f4669227'
  - url: 'https://git.kernel.org/stable/c/3d80ebe6d1b7bc9ad20fd9b0c1a0c56d804f8a0a'
  - url: 'https://git.kernel.org/stable/c/c283a6ffe6d5d6e5594d991286b9ce15951572e1'
  - url: 'https://git.kernel.org/stable/c/3a64125730cabc34fccfbc230c2667c2e14f7308'
tags:
  - cve.org
epss: 0.00162
epssPercentile: 0.04998
ingestedAt: '2026-10-21T12:48:53.665Z'
---

## Overview

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

ksmbd: use volume UUID in FS_OBJECT_ID_INFORMATION

Use sb->s_uuid for a proper volume identifier as the primary choice.
For filesystems that do not provide a UUID, fall back to stfs.f_fsid
obtained from vfs_statfs().

## Affected

- `Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 1df0123f96f377282feaae24d8e561fff4a6541f`
- `Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < ce00616bc1df675bfdacc968f2bf7c51f4669227`
- `Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 3d80ebe6d1b7bc9ad20fd9b0c1a0c56d804f8a0a`
- `Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < c283a6ffe6d5d6e5594d991286b9ce15951572e1`
- `Linux >= e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 < 3a64125730cabc34fccfbc230c2667c2e14f7308`
- `Linux 5.15`

## Remediation

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