CVE-2026-89668 Linux Kernel - Resource Management Issue

Linux kernel contains a resource management vulnerability caused by improper initialization order in nfsd_debugfs_init() and nfsd4_init_slabs(), letting kernel modules leave orphan debugfs files with stale pointers, exploit requires slab allocation failure.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.18% chance of exploitation in 30 days
View the NVD record ↗

Details

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

Vendor fix

Update to the latest Linux kernel version containing the fix for nfsd initialization order.

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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