---
id: CVE-2022-40768
title: >-
  drivers/scsi/stex.c in the Linux kernel through 5.19.9 allows local users to
  obtain sensitive information from kernel memory because stex_queuecommand_lck
  lacks a memset for the PASSTHRU_CMD case.
summary: >-
  drivers/scsi/stex.c in the Linux kernel through 5.19.9 allows local users to
  obtain sensitive information from kernel memory because stex_queuecommand_lck
  lacks a memset for the PASSTHRU_CMD case.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-908
vendor: linux
product: linux_kernel
affected:
  - linux_kernel <= 5.19.9
  - fedora = 35
  - fedora = 36
  - fedora = 37
  - debian_linux = 10.0
published: '2022-09-18'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T18:17:05.703'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-40768'
references:
  - url: 'http://www.openwall.com/lists/oss-security/2022/09/19/1'
    label: cve@mitre.org
  - url: >-
      https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6022f210461fef67e6e676fd8544ca02d1bcfa7a
    label: cve@mitre.org
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/scsi/stex.c
    label: cve@mitre.org
  - url: 'https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html'
    label: cve@mitre.org
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/
    label: cve@mitre.org
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/
    label: cve@mitre.org
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/
    label: cve@mitre.org
  - url: >-
      https://lore.kernel.org/all/20220908145154.2284098-1-gregkh%40linuxfoundation.org/
    label: cve@mitre.org
  - url: 'https://www.openwall.com/lists/oss-security/2022/09/09/1'
    label: cve@mitre.org
  - url: 'http://www.openwall.com/lists/oss-security/2022/09/19/1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6022f210461fef67e6e676fd8544ca02d1bcfa7a
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/scsi/stex.c
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2022/12/msg00034.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lore.kernel.org/all/20220908145154.2284098-1-gregkh%40linuxfoundation.org/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.openwall.com/lists/oss-security/2022/09/09/1'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-794697.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
epss: 0.00292
epssPercentile: 0.20285
ingestedAt: '2026-10-14T18:47:39.272Z'
---

## Overview

drivers/scsi/stex.c in the Linux kernel through 5.19.9 allows local users to obtain sensitive information from kernel memory because stex_queuecommand_lck lacks a memset for the PASSTHRU_CMD case.

## Affected

- `linux_kernel <= 5.19.9`
- `fedora = 35`
- `fedora = 36`
- `fedora = 37`
- `debian_linux = 10.0`

## Remediation

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