CVE-2026-108985

Publication date 12 October 2026

Last updated 9 November 2026

Ubuntu priority

Cvss 3 Severity Score

Description

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libnfs	26.10 stonking	Fixed in 5.0.2-1ubuntu3.1
	26.04 LTS resolute	Fixed in 5.0.2-1ubuntu1.2
	24.04 LTS noble	Fixed in 5.0.2-1ubuntu0.24.04.2
	22.04 LTS jammy	Fixed in 4.0.0-1ubuntu0.2
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libnfs	Upstream: 7613236

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.1 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality impact	None
Integrity impact	Low
Availability impact	High

Scores

Parameter	Value
Base score	7.1 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

References

Related Ubuntu Security Notices (USN)

USN-9008-1
libnfs vulnerability
9 November 2026

Other references

https://www.cve.org/CVERecord?id=CVE-2026-108985