CVE-2026-90199 Linux Kernel - Improper Input Validation

Linux kernel contains a vulnerability in fs/ntfs3 where improper validation of evcn in mi_enum_attr() allows malformed on-disk attributes to bypass checks due to evcn wraparound, letting attackers cause potential data corruption or denial of service, exploit requires crafted malformed NTFS attributes.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Improper Input Validation
Impact
Denial Of Service, Data Tampering
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for the evcn validation in fs/ntfs3.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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