---
id: CVE-2026-53021
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: target: core: Fix integer overflow in UNMAP bounds check

  sbc_execute_unmap() checks LBA + range does not exceed the device capacity,
  but does not guard against L…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: target: core: Fix integer overflow in UNMAP bounds check

  sbc_execute_unmap() checks LBA + range does not exceed the device capacity,
  but does not guard against L…
severity: none
published: '2026-06-24'
updated: '2026-07-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53021'
references:
  - url: 'https://git.kernel.org/stable/c/02115986d027ade793e7f6be87e91d6a796d0aa3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2bf2d65f76697820dbc4227d13866293576dd90a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2e1ed9a7b6ea5bfefb5d80a02b1c71c7dee1f0dd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3facdecc3fcf115cc4f9b3d8f118d6705e2456a8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/51075df70c46e60a9773f2dcd28299e40dac36fb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5efc3ef4758f8d98c257419fa21daca3227de61a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c08ab702c4699c6efb9d60bdb15b73e7a627ee7e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d7aef29573c7c5cdb2dfad939253287a6329c2a4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00162
epssPercentile: 0.04804
ingestedAt: '2026-07-11T19:15:11.874Z'
---

## Overview

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

scsi: target: core: Fix integer overflow in UNMAP bounds check

sbc_execute_unmap() checks LBA + range does not exceed the device capacity,
but does not guard against LBA + range wrapping around on 64-bit overflow.

Add an overflow check matching the pattern already used for WRITE_SAME in
the same file.

## Remediation

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