SB20260816339 - Out-of-bounds write in Linux kernel ntfs3

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260816339

SB20260816339 - Out-of-bounds write in Linux kernel ntfs3

Published: August 16, 2026

Security Bulletin ID SB20260816339
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds write (CVE-ID: CVE-2026-72191)

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

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to an out-of-bounds write in indx_insert_into_buffer in the ntfs3 filesystem code when processing a crafted NTFS filesystem image during file creation in a mounted directory. A local user can mount a specially crafted NTFS image and trigger filesystem operations to cause a denial of service.

Triggering the issue requires local mounting of an attacker-supplied filesystem image, such as via loopback, removable media, or USB, and a filesystem operation such as creating a file in the mounted directory.


Remediation

Install update from vendor's website.

References