CVE-2022-27239

Publication date 27 April 2022

Last updated 7 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

In cifs-utils through 6.14, a stack-based buffer overflow when parsing the mount.cifs ip= command-line argument could lead to local attackers gaining root privileges.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
cifs-utils	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Fixed in 2:6.14-1ubuntu0.1
	21.10 impish	Fixed in 2:6.11-3.1ubuntu0.1
	20.04 LTS focal	Fixed in 2:6.9-1ubuntu0.2
	18.04 LTS bionic	Fixed in 2:6.8-1ubuntu1.2
	16.04 LTS xenial	Fixed in 2:6.4-1ubuntu1.1+esm1
	14.04 LTS trusty	Fixed in 2:6.0-1ubuntu2+esm1

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Patch details

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

Package	Patch details
cifs-utils	Upstream: https://git.samba.org/cifs-utils.git/?p=cifs-utils.git;a=patch;h=007c07fd91b6d42f8bd45187cf78ebb06801139d

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.8 · High

Base metrics

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

Scores

Parameter	Value
Base score	7.8 · High
Exploitability score	-
Impact score	-

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

References

Related Ubuntu Security Notices (USN)

USN-5459-1
cifs-utils vulnerabilities
2 June 2022

USN-7688-1
cifs-utils vulnerabilities
7 August 2025