SB2026091663 - Out-of-bounds write in Linux kernel ntfs3

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Main Vulnerability Database SB2026091663

SB2026091663 - Out-of-bounds write in Linux kernel ntfs3

Published: September 16, 2026

Security Bulletin ID SB2026091663
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds write (CVE-ID: CVE-2026-90048)

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

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to compromise confidentiality, integrity, and availability.

The vulnerability exists due to an out-of-bounds write in ni_create_attr_list() in the NTFS3 filesystem driver when processing a crafted loop-mounted NTFS image. A remote attacker can craft an NTFS image containing many nameless minimum-size resident attributes to compromise confidentiality, integrity, and availability.

Exploitation is reached by opening a file on the mounted image and adding an attribute.


Remediation

Install update from vendor's website.

References