---
id: CVE-2026-23087
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: xen: scsiback: Fix potential memory leak in scsiback_remove()

  Memory allocated for struct vscsiblk_info in scsiback_probe() is not
  freed in scsiback_remove() lea…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: xen: scsiback: Fix potential memory leak in scsiback_remove()

  Memory allocated for struct vscsiblk_info in scsiback_probe() is not
  freed in scsiback_remove() lea…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-401
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 3.18, < 5.10.249'
  - 'linux_kernel >= 5.11, < 5.15.199'
  - 'linux_kernel >= 5.16, < 6.1.162'
  - 'linux_kernel >= 6.2, < 6.6.122'
  - 'linux_kernel >= 6.7, < 6.12.68'
  - 'linux_kernel >= 6.13, < 6.18.8'
  - linux_kernel = 6.19
patched:
  - linux_kernel 6.18.8
published: '2026-02-04'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:18:41.670'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-23087'
references:
  - url: 'https://git.kernel.org/stable/c/24c441f0e24da175d7912095663f526ac480dc4f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/32e52b56056daf0f0881fd9254706acf25b4be97'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/427b0fb30ddec3bad05dcd73b00718f98c7026d2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4a975c72429b050c234405668b742cdecc11548e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/901a5f309daba412e2a30364d7ec1492fa11c32c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a8bb3ec8d85951a56af0a72d93ccbc2aee42eef9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f86264ec0e2b102fcd49bf3e4f32fee669d482fc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-019113.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-457936.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00147
epssPercentile: 0.03864
ingestedAt: '2026-09-08T15:33:26.994Z'
---

## Overview

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

scsi: xen: scsiback: Fix potential memory leak in scsiback_remove()

Memory allocated for struct vscsiblk_info in scsiback_probe() is not
freed in scsiback_remove() leading to potential memory leaks on remove,
as well as in the scsiback_probe() error paths. Fix that by freeing it
in scsiback_remove().

## Affected

- `linux_kernel >= 3.18, < 5.10.249`
- `linux_kernel >= 5.11, < 5.15.199`
- `linux_kernel >= 5.16, < 6.1.162`
- `linux_kernel >= 6.2, < 6.6.122`
- `linux_kernel >= 6.7, < 6.12.68`
- `linux_kernel >= 6.13, < 6.18.8`
- `linux_kernel = 6.19`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.18.8`