---
id: CVE-2026-98168
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  smb: client: fix reparse buffer bounds in cifs_query_reparse_point()

  In cifs_query_reparse_point(), the start >= end check before casting to
  struct reparse_data_buffer…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  smb: client: fix reparse buffer bounds in cifs_query_reparse_point()

  In cifs_query_reparse_point(), the start >= end check before casting to
  struct reparse_data_buffer…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 48ca7139ab7f0bbed95ff7a901ea497017769657 <
    3d67f155fe5813cfb02a551a9a12d6ea06a902e9
  - >-
    Linux >= 56e84c64fc257a95728ee73165456b025c48d408 <
    d1152c96a3002e3df6b9a5b007cecaa7b19b4f79
  - >-
    Linux >= 56e84c64fc257a95728ee73165456b025c48d408 <
    8dc5db3a0e583ea8d31d0613cefd99e93e095c3c
  - >-
    Linux >= 56e84c64fc257a95728ee73165456b025c48d408 <
    5f0306e731e2f46e91419eae57eee3a241c055e0
  - Linux 848d78e3625f15de09d34a562dc49a98b78a62f3
  - Linux c13b779d26b3702fba8f7d5fe757aba5bda85fd0
  - Linux >= 6.12.34 < 6.12.112
  - Linux >= 6.6.94 < 6.7
  - Linux >= 6.15.3 < 6.16
  - Linux 6.16
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:17:58.333'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98168'
references:
  - url: 'https://git.kernel.org/stable/c/3d67f155fe5813cfb02a551a9a12d6ea06a902e9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5f0306e731e2f46e91419eae57eee3a241c055e0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8dc5db3a0e583ea8d31d0613cefd99e93e095c3c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d1152c96a3002e3df6b9a5b007cecaa7b19b4f79'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.458Z'
---

## Overview

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

smb: client: fix reparse buffer bounds in cifs_query_reparse_point()

In cifs_query_reparse_point(), the start >= end check before casting to
struct reparse_data_buffer * only ensures the start pointer is within the
response. It fails to verify that there is enough space remaining for the
fixed 8-byte header of the structure.

If a server provides a DataOffset that leaves less than 8 bytes remaining,
the check passes, but subsequent reads of ReparseTag and ReparseDataLength
will occur out-of-bounds.

Fix this by ensuring the remaining space is at least the size of the
reparse_data_buffer structure before accessing its fields.

## Remediation

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