CVE-2022-3328

Publication date 30 November 2022

Last updated 18 August 2025

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Description

Race condition in snap-confine's must_mkdir_and_open_with_perms()

From the Ubuntu Security Team

The Qualys Research Team discovered that a race condition existed in the snapd snap-confine binary when preparing the private /tmp mount for a snap. A local attacker could possibly use this issue to escalate privileges and execute arbitrary code.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
snapd	25.10 questing	Not affected
	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	Fixed 2.57.5+22.10ubuntu0.1
	22.04 LTS jammy	Fixed 2.57.5+22.04ubuntu0.1
	20.04 LTS focal	Fixed 2.57.5+20.04ubuntu0.1
	18.04 LTS bionic	Fixed 2.57.5+18.04ubuntu0.1
	16.04 LTS xenial	Fixed 2.54.3+16.04.0ubuntu0.1~esm5
	14.04 LTS trusty	Ignored end of standard support

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro 30-day free trial

Notes

alexmurray

vuln introduced as part of the fix for CVE-2021-44731 - as such affects upstream versions 2.54.3 to 2.57.5

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H