CVE-2026-89680 Linux Kernel - Resource Leak

Linux kernel contains a resource leak vulnerability caused by improper error handling in nfsd4_setup_inter_ssc during inter-server COPY setup failure, letting attackers cause resource exhaustion, exploit requires triggering inter-server COPY failure.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.65% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Resource Leak
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
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

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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