---
id: CVE-2023-53803
title: 'scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()

  A fix for:

  BUG: KASAN: slab-out-of-bounds in ses_enclosure_data_process+0x949/0xe30 [ses]
  Read of si…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 21fab1d0595eacf781705ec3509012a28f298245 <
    da1a955c48a16e16e925d6544793914e52a6fa51
  - >-
    Linux >= 21fab1d0595eacf781705ec3509012a28f298245 <
    9e5c7d52085b8c84bc82a261580f0eb170039325
  - >-
    Linux >= 21fab1d0595eacf781705ec3509012a28f298245 <
    467afb1dd630d8c6d172bd6cacc125199b5f4f2d
  - >-
    Linux >= 21fab1d0595eacf781705ec3509012a28f298245 <
    e4dd25da784b2e07dbfbf04509afa4c5a1375227
  - >-
    Linux >= 21fab1d0595eacf781705ec3509012a28f298245 <
    2b28a7d261cb309912596d6a2d383ca370483527
  - >-
    Linux >= 21fab1d0595eacf781705ec3509012a28f298245 <
    0dfe68394cbe1d4fe579fb325ecc813c50528c5a
  - >-
    Linux >= 21fab1d0595eacf781705ec3509012a28f298245 <
    799e8dd2022d2e13f0c5c1906b40ceca07a23349
  - >-
    Linux >= 21fab1d0595eacf781705ec3509012a28f298245 <
    9b4f5028e493cb353a5c8f5c45073eeea0303abd
  - Linux 2.6.32
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-15T21:37:21.974474Z'
published: '2025-12-09'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T21:41:36.435Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-53803'
references:
  - url: 'https://git.kernel.org/stable/c/da1a955c48a16e16e925d6544793914e52a6fa51'
  - url: 'https://git.kernel.org/stable/c/9e5c7d52085b8c84bc82a261580f0eb170039325'
  - url: 'https://git.kernel.org/stable/c/467afb1dd630d8c6d172bd6cacc125199b5f4f2d'
  - url: 'https://git.kernel.org/stable/c/e4dd25da784b2e07dbfbf04509afa4c5a1375227'
  - url: 'https://git.kernel.org/stable/c/2b28a7d261cb309912596d6a2d383ca370483527'
  - url: 'https://git.kernel.org/stable/c/0dfe68394cbe1d4fe579fb325ecc813c50528c5a'
  - url: 'https://git.kernel.org/stable/c/799e8dd2022d2e13f0c5c1906b40ceca07a23349'
  - url: 'https://git.kernel.org/stable/c/9b4f5028e493cb353a5c8f5c45073eeea0303abd'
tags:
  - cve.org
epss: 0.00289
epssPercentile: 0.20126
ingestedAt: '2026-10-15T22:48:25.421Z'
---

## Overview

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

scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process()

A fix for:

BUG: KASAN: slab-out-of-bounds in ses_enclosure_data_process+0x949/0xe30 [ses]
Read of size 1 at addr ffff88a1b043a451 by task systemd-udevd/3271

Checking after (and before in next loop) addl_desc_ptr[1] is sufficient, we
expect the size to be sanitized before first access to addl_desc_ptr[1].
Make sure we don't walk beyond end of page.

## Affected

- `Linux >= 21fab1d0595eacf781705ec3509012a28f298245 < da1a955c48a16e16e925d6544793914e52a6fa51`
- `Linux >= 21fab1d0595eacf781705ec3509012a28f298245 < 9e5c7d52085b8c84bc82a261580f0eb170039325`
- `Linux >= 21fab1d0595eacf781705ec3509012a28f298245 < 467afb1dd630d8c6d172bd6cacc125199b5f4f2d`
- `Linux >= 21fab1d0595eacf781705ec3509012a28f298245 < e4dd25da784b2e07dbfbf04509afa4c5a1375227`
- `Linux >= 21fab1d0595eacf781705ec3509012a28f298245 < 2b28a7d261cb309912596d6a2d383ca370483527`
- `Linux >= 21fab1d0595eacf781705ec3509012a28f298245 < 0dfe68394cbe1d4fe579fb325ecc813c50528c5a`
- `Linux >= 21fab1d0595eacf781705ec3509012a28f298245 < 799e8dd2022d2e13f0c5c1906b40ceca07a23349`
- `Linux >= 21fab1d0595eacf781705ec3509012a28f298245 < 9b4f5028e493cb353a5c8f5c45073eeea0303abd`
- `Linux 2.6.32`

## Remediation

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