CVE-2026-89098

Nfs-utils: nfs-utils: denial of service via assertion failure in fsidd

CVE-2026-89098 is fixed in nfs-utils on 1 platform by DEBIAN-CVE-2026-89098 (version 1:3.1.1-1), released October 17, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.5

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0015

3rd percentile

A flaw was found in nfs-utils. The fsidd daemon improperly handles input received over its local domain socket by relying on program assertions to verify command arguments. A local user can exploit this vulnerability by sending a malformed request lacking the required arguments to trigger an assertion failure. This causes the daemon to crash, resulting in a Denial of Service (DoS) for filesystem identifier lookup services until restarted.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
nfs-utils · Debian 14	1:3.1.1-1	DEBIAN-CVE-2026-89098	Oct 17, 2026

Details

Published
October 16, 2026
Weakness
Reachable Assertion
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-89098

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