SB20260816340 - Out-of-bounds write in Linux kernel ntfs3

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Main Vulnerability Database SB20260816340

SB20260816340 - Out-of-bounds write in Linux kernel ntfs3

Published: August 16, 2026

Security Bulletin ID SB20260816340
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

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-2026-72192)

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

CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to overwrite adjacent heap memory.

The vulnerability exists due to an out-of-bounds write in indx_insert_into_root in the ntfs3 index handling code when processing a crafted mounted NTFS image during file creation. A local user can create a sufficiently long file name in a directory with a full resident root to overwrite adjacent heap memory.

The overwritten bytes are copied from on-disk NTFS entries and are attacker-controlled, and exploitation depends on the surrounding slab layout.


Remediation

Install update from vendor's website.

References