---
id: CVE-2026-98172
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  smb: client: fix smbd_connection leak on cifs_get_tcp_session() error

  When an RDMA connection is successfully established via
  smbd_get_connection() but cifs_get_tcp_se…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  smb: client: fix smbd_connection leak on cifs_get_tcp_session() error

  When an RDMA connection is successfully established via
  smbd_get_connection() but cifs_get_tcp_se…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 2f8946464b11822169b9f10c7cf58a2440b51d54 <
    3164402c58940ff58a3cecdb026405f07b0253af
  - >-
    Linux >= 2f8946464b11822169b9f10c7cf58a2440b51d54 <
    e3344bb0ff5ec8a276f42239e140f5442841ef23
  - >-
    Linux >= 2f8946464b11822169b9f10c7cf58a2440b51d54 <
    5c908e49d349266dff0c86dda6a05df0ff19b824
  - >-
    Linux >= 2f8946464b11822169b9f10c7cf58a2440b51d54 <
    928edc4bd6a617caabeb575fc13c254d9df623c4
  - >-
    Linux >= 2f8946464b11822169b9f10c7cf58a2440b51d54 <
    b26a3fcf2f1c2cadba400290b639f01395db8fc8
  - >-
    Linux >= 2f8946464b11822169b9f10c7cf58a2440b51d54 <
    e75c96157d45e498970158c8f7373d90102e33b9
  - Linux 4.16
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:17:58.920'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98172'
references:
  - url: 'https://git.kernel.org/stable/c/3164402c58940ff58a3cecdb026405f07b0253af'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5c908e49d349266dff0c86dda6a05df0ff19b824'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/928edc4bd6a617caabeb575fc13c254d9df623c4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b26a3fcf2f1c2cadba400290b639f01395db8fc8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e3344bb0ff5ec8a276f42239e140f5442841ef23'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e75c96157d45e498970158c8f7373d90102e33b9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.456Z'
---

## Overview

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

smb: client: fix smbd_connection leak on cifs_get_tcp_session() error

When an RDMA connection is successfully established via
smbd_get_connection() but cifs_get_tcp_session() later fails (e.g.
kthread_create() returns an error), the error path frees tcp_ses
without first destroying the smbd_connection.

Fix this by calling smbd_destroy() in the out_err cleanup path before
kfree(tcp_ses).  smbd_destroy() safely handles the case where
smbd_conn is NULL, so it can be called unconditionally.

## Remediation

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