CVE-2026-98056 Linux Kernel nvme - Denial of Service

Linux kernel nvme subsystem contains a denial of service caused by inefficient stale namespace removal in nvme_scan_ns_list, letting attackers with sparse NSID space cause CPU soft lockup, exploit requires sparse NSID gaps.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.60% 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
25 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for efficient stale namespace removal.

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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