CVE-2026-90228 Linux Kernel - Denial of Service

Linux kernel contains a NULL pointer dereference caused by improper handling of file-backed namespaces in nvmet_execute_identify_ns_zns(), letting remote attackers cause a denial of service by issuing specific Identify commands, exploit requires CONFIG_BLK_DEV_ZONED enabled and file-backed namespace.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.67% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version with the fix applied.

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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