Missing Authorization in Linux kernel - CVE-2026-90132
Published: September 19, 2026
Vulnerability identifier: #VU151356
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-90132
CWE-ID: CWE-862
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-90132
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3