SB20260816499 - Out-of-bounds write in Linux kernel ata driver

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260816499

SB20260816499 - Out-of-bounds write in Linux kernel ata driver

Published: August 16, 2026

Security Bulletin ID SB20260816499
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Physical access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds write (CVE-ID: CVE-2026-72030)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows an attacker with physical access to cause a denial of service.

The vulnerability exists due to out-of-bounds read and out-of-bounds write in ata_dev_config_cpr() and the VPD page B9h emitter when processing a device-reported concurrent positioning ranges log. An attacker with physical access can connect a crafted device that reports an invalid concurrent positioning ranges count to cause a denial of service.

The issue can affect both parsing of the returned log data and emission of one descriptor per range into a fixed-size response buffer.


Remediation

Install update from vendor's website.

References