SB2026091988 - Missing Authorization in Linux kernel ntfs
Published: September 19, 2026
Security Bulletin ID
SB2026091988
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Missing Authorization (CVE-ID: CVE-2026-90132)
CWE-ID: CWE-862 - Missing Authorization
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to modify reserved $LX* extended attributes.
The vulnerability exists due to improper access control in ntfs_setxattr when setting reserved $LX* extended attributes from userspace. A local user can set a reserved extended attribute to modify reserved $LX* extended attributes.
The reserved attribute names are $LXUID, $LXGID, $LXMOD, and $LXDEV.
Remediation
Install update from vendor's website.