---
id: CVE-2026-98453
title: 'smb: client: close handle after create-context parsing failure'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  smb: client: close handle after create-context parsing failure

  SMB2_open() accounts a successful CREATE response as a remote open before
  parsing its create contexts.  …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= af1689a9b7701d9907dfc84d2a4b57c4bc907144 <
    80c67cc71d32ccafc89a29b669243b40d81b930f
  - >-
    Linux >= af1689a9b7701d9907dfc84d2a4b57c4bc907144 <
    f09875ff901e933e7b22c913daf51d21e9d93a45
  - >-
    Linux >= af1689a9b7701d9907dfc84d2a4b57c4bc907144 <
    cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb
  - >-
    Linux >= af1689a9b7701d9907dfc84d2a4b57c4bc907144 <
    566820af017e81497fb5e9d3ad6e7ffe2828bc8b
  - Linux 6726429c18c62dbf5e96ebbd522f262e016553fb
  - Linux 13fb0fc4917621f3dfa285a27eaf7151d770b5e5
  - Linux 890bc4fac3c0973a49cac35f634579bebba7fe48
  - Linux 1ae3c59355dc9882e09c020afe8ffbd895ad0f29
  - Linux 17a0f64cc02d4972e21c733d9f21d1c512963afa
  - Linux >= 5.4.277 < 5.5
  - Linux >= 5.10.211 < 5.11
  - Linux >= 5.15.150 < 5.16
  - Linux >= 6.1.79 < 6.2
  - Linux >= 6.6.8 < 6.7
  - Linux 6.7
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T15:15:03.262Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98453'
references:
  - url: 'https://git.kernel.org/stable/c/80c67cc71d32ccafc89a29b669243b40d81b930f'
  - url: 'https://git.kernel.org/stable/c/f09875ff901e933e7b22c913daf51d21e9d93a45'
  - url: 'https://git.kernel.org/stable/c/cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb'
  - url: 'https://git.kernel.org/stable/c/566820af017e81497fb5e9d3ad6e7ffe2828bc8b'
tags:
  - cve.org
ingestedAt: '2026-10-18T15:45:12.303Z'
---

## Overview

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

smb: client: close handle after create-context parsing failure

SMB2_open() accounts a successful CREATE response as a remote open before
parsing its create contexts.  If smb2_parse_contexts() rejects malformed
context data, SMB2_open() returns without closing the handle, leaving the
server-side handle open and num_remote_opens elevated.

Close the handle after a post-CREATE context parsing failure so the error
path releases the remote resource and balances the open count.

## Affected

- `Linux >= af1689a9b7701d9907dfc84d2a4b57c4bc907144 < 80c67cc71d32ccafc89a29b669243b40d81b930f`
- `Linux >= af1689a9b7701d9907dfc84d2a4b57c4bc907144 < f09875ff901e933e7b22c913daf51d21e9d93a45`
- `Linux >= af1689a9b7701d9907dfc84d2a4b57c4bc907144 < cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb`
- `Linux >= af1689a9b7701d9907dfc84d2a4b57c4bc907144 < 566820af017e81497fb5e9d3ad6e7ffe2828bc8b`
- `Linux 6726429c18c62dbf5e96ebbd522f262e016553fb`
- `Linux 13fb0fc4917621f3dfa285a27eaf7151d770b5e5`
- `Linux 890bc4fac3c0973a49cac35f634579bebba7fe48`
- `Linux 1ae3c59355dc9882e09c020afe8ffbd895ad0f29`
- `Linux 17a0f64cc02d4972e21c733d9f21d1c512963afa`
- `Linux >= 5.4.277 < 5.5`
- `Linux >= 5.10.211 < 5.11`
- `Linux >= 5.15.150 < 5.16`
- `Linux >= 6.1.79 < 6.2`
- `Linux >= 6.6.8 < 6.7`
- `Linux 6.7`

## Remediation

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