---
id: CVE-2026-93210
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  smb: client: harden DFS cache against invalid target hints

  Currently, get_tgt_name() returns ERR_PTR(-ENOENT) when ce->tgthint is
  NULL, and dfs_cache_noreq_update_tgth…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  smb: client: harden DFS cache against invalid target hints

  Currently, get_tgt_name() returns ERR_PTR(-ENOENT) when ce->tgthint is
  NULL, and dfs_cache_noreq_update_tgth…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    a48328afbc3f63e3b9de8827e2e16c15b17976f7
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    6cb7f9fed8f40f28fbd464ca99c946951afc0952
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    66dbcdbb0cadffd12eb8f2b115fd57d384c5109d
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    846f0709559b9e27024e126a80bc7afb76516912
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    7e32da6047d9afdae8dd17b87b4c8d97363c4ee2
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    bf86c08123c6ab8c61cc0be1dad7540db93738ff
  - Linux < 6.1.188
  - Linux < 6.6.157
  - Linux < 6.12.109
  - Linux < 6.18.50
  - Linux < 7.2.4
  - Linux (all versions)
published: '2026-09-24'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T13:17:17.670'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93210'
references:
  - url: 'https://git.kernel.org/stable/c/66dbcdbb0cadffd12eb8f2b115fd57d384c5109d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6cb7f9fed8f40f28fbd464ca99c946951afc0952'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7e32da6047d9afdae8dd17b87b4c8d97363c4ee2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/846f0709559b9e27024e126a80bc7afb76516912'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a48328afbc3f63e3b9de8827e2e16c15b17976f7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bf86c08123c6ab8c61cc0be1dad7540db93738ff'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T15:45:56.671Z'
---

## Overview

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

smb: client: harden DFS cache against invalid target hints

Currently, get_tgt_name() returns ERR_PTR(-ENOENT) when ce->tgthint is
NULL, and dfs_cache_noreq_update_tgthint() assumes ce->tgthint is always
valid.

In preparation for clearing ce->tgthint in free_tgts(), harden callers
of get_tgt_name() against ERR_PTR results and harden
dfs_cache_noreq_update_tgthint() against NULL pointer dereferences.

## Remediation

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