---
id: CVE-2026-89792
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ksmbd: prevent out-of-bounds reads in share config responses

  Validate IPC share configuration payload sizes before consuming
  variable-length fields
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ksmbd: prevent out-of-bounds reads in share config responses

  Validate IPC share configuration payload sizes before consuming
  variable-length fields. Bound veto list pa…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= a677ebd8ca2f2632ccdecbad7b87641274e15aac <
    61a8d06600c8c397f9a7e01940479d4c94a82f5f
  - >-
    Linux >= a677ebd8ca2f2632ccdecbad7b87641274e15aac <
    f25e93768fcc5d8287e50b1ec52a42e4c276df34
  - Linux 88b7f1143b15b29cccb8392b4f38e75b7bb3e300
  - Linux 51a6c2af9d20203ddeeaf73314ba8854b38d01bd
  - Linux a637fabac554270a851033f5ab402ecb90bc479c
  - Linux 76af689a45aa44714b46d1a7de4ffdf851ded896
  - Linux >= 5.15.157 < 5.16
  - Linux >= 6.1.85 < 6.2
  - Linux >= 6.6.26 < 6.7
  - Linux >= 6.8.5 < 6.9
  - Linux 6.9
published: '2026-09-16'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T14:17:26.597'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89792'
references:
  - url: 'https://git.kernel.org/stable/c/61a8d06600c8c397f9a7e01940479d4c94a82f5f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cd2bcee450bc94770be56c0b896c1a1dc6838bd8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f25e93768fcc5d8287e50b1ec52a42e4c276df34'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ffa507f5f774cb4d45136b106989ebc051361263'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00159
epssPercentile: 0.05458
ingestedAt: '2026-09-16T08:52:29.590Z'
---

## Overview

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

ksmbd: prevent out-of-bounds reads in share config responses

Validate IPC share configuration payload sizes before consuming
variable-length fields. Bound veto list parsing and account for
the separator byte when deriving the path length.

## Remediation

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