---
id: CVE-2026-98545
title: >-
  kernel: ata: libata-scsi: bound the ATA passthru sense descriptor writes
  (CVE-2026-98545)
summary: >-
  A flaw was found in the Linux kernel's libata SCSI subsystem. When processing
  ATA pass-through commands to an ATAPI storage device, the kernel fails to
  properly validate the length byte returned in the device's sense response
  buffer. A mal…
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-787
vendor: Red Hat
product: Red Hat Enterprise Linux 10
affected:
  - enterprise_linux 10
  - enterprise_linux 6
published: '2026-10-18'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T23:54:24+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98545.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98545.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98545'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2554942'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98545'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98545'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98545.mbox
  - url: 'https://git.kernel.org/stable/c/c698f6deabf680f8f4a1727ef2dc80fe78815fbf'
  - url: 'https://git.kernel.org/stable/c/d9a7147b93624660626cd7c3b1143715699e1f5c'
  - url: 'https://git.kernel.org/stable/c/1603abb0c50420e97cf4a1feddbd5e183c5fdf86'
  - url: 'https://git.kernel.org/stable/c/80fbb0bc4d11683c88f2f9d3997ea02fcada5408'
  - url: 'https://git.kernel.org/stable/c/80320b278fea07ffcda3f57b67b61658e0a4e1ca'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00206
epssPercentile: 0.10482
ingestedAt: '2026-10-18T15:45:12.267Z'
---

## Overview

A flaw was found in the Linux kernel's libata SCSI subsystem. When processing ATA pass-through commands to an ATAPI storage device, the kernel fails to properly validate the length byte returned in the device's sense response buffer. A malicious or faulty device can exploit this issue to trigger out-of-bounds memory reads and writes, leading to memory corruption, system instability, or a Denial of Service (DoS).

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10 · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98545.json)

**kernel: ata: libata-scsi: bound the ATA passthru sense descriptor writes** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-19.

Affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6

No fix planned:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 10

Not affected:

- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Out of support scope