---
id: CVE-2022-50215
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: sg: Allow waiting for commands to complete on removed device

  When a SCSI device is removed while in active use, currently sg will
  immediately return -ENODEV on a…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: sg: Allow waiting for commands to complete on removed device

  When a SCSI device is removed while in active use, currently sg will
  immediately return -ENODEV on a…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: linux
product: linux_kernel
affected:
  - linux_kernel < 4.9.326
  - 'linux_kernel >= 4.10, < 4.14.291'
  - 'linux_kernel >= 4.15, < 4.19.256'
  - 'linux_kernel >= 4.20, < 5.4.211'
  - 'linux_kernel >= 5.5, < 5.10.137'
  - 'linux_kernel >= 5.11, < 5.15.61'
  - 'linux_kernel >= 5.16, < 5.18.18'
  - 'linux_kernel >= 5.19, < 5.19.2'
patched:
  - linux_kernel 5.19.2
published: '2025-06-18'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:17:27.833'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-50215'
references:
  - url: 'https://git.kernel.org/stable/c/03d8241112d5e3cccce1a01274a221099f07d2e1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3455607fd7be10b449f5135c00dc306b85dc0d21'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/35e60ec39e862159cb92923eefd5230d4a873cb9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/408bfa1489a3cfe7150b81ab0b0df99b23dd5411'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8c004b7dbb340c1e5889f5fb9e5baa6f6e5303e8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bbc118acf7baf9e93c5e1314d14f481301af4d0f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ed9afd967cbfe7da2dc0d5e52c62a778dfe9f16b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f135c65085eed869d10e4e7923ce1015288618da'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f5e61d9b4a699dd16f32d5f39eb1cf98d84c92ed'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00253
epssPercentile: 0.16727
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T21:30:28.186464Z'
ingestedAt: '2026-10-15T21:45:11.283Z'
---

## Overview

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

scsi: sg: Allow waiting for commands to complete on removed device

When a SCSI device is removed while in active use, currently sg will
immediately return -ENODEV on any attempt to wait for active commands that
were sent before the removal.  This is problematic for commands that use
SG_FLAG_DIRECT_IO since the data buffer may still be in use by the kernel
when userspace frees or reuses it after getting ENODEV, leading to
corrupted userspace memory (in the case of READ-type commands) or corrupted
data being sent to the device (in the case of WRITE-type commands).  This
has been seen in practice when logging out of a iscsi_tcp session, where
the iSCSI driver may still be processing commands after the device has been
marked for removal.

Change the policy to allow userspace to wait for active sg commands even
when the device is being removed.  Return -ENODEV only when there are no
more responses to read.

## Affected

- `linux_kernel < 4.9.326`
- `linux_kernel >= 4.10, < 4.14.291`
- `linux_kernel >= 4.15, < 4.19.256`
- `linux_kernel >= 4.20, < 5.4.211`
- `linux_kernel >= 5.5, < 5.10.137`
- `linux_kernel >= 5.11, < 5.15.61`
- `linux_kernel >= 5.16, < 5.18.18`
- `linux_kernel >= 5.19, < 5.19.2`

## Remediation

Upgrade past the affected range:

- `linux_kernel 5.19.2`