CVE-2022-3328: Race condition in snap-confine's must_mkdir_and_open_with_perms()

Q: How do I fix CVE-2022-3328?

snapd: upgrade to 2.61.1; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2022-3328 being exploited?

CVE-2022-3328 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-3328 affect?

CVE-2022-3328 affects snapd, ubuntu linux. Severity is high (CVSS 7.8). Race condition in snap-confine's must_mkdir_and_open_with_perms()

Q: How urgent is CVE-2022-3328?

Priority 40/100. High severity; On your watchlist

This month

HIGH 7.8WATCHLISTUPGRADEMITIGATE

CVE-2022-3328 is a high-severity flaw (CVSS 7.8) affecting snapd, ubuntu linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Race condition in snap-confine's must_mkdir_and_open_with_perms()

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-362
Published	2024-01-08
Last modified	2026-06-17

Publisher (CNA): Canonical Ltd. · Vendor: canonical

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-01-08 18:15 UTCPublished CVE record published
2026-06-17 04:59 UTCUpdated Record last modified

canonical snapd UPGRADE

Affected: < 2.61.1

Fixed in: 2.61.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy snapd || rpm -q snapd || snapd --version

2. UPGRADE to 2.61.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade snapd

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade snapd

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

canonical ubuntu linux MITIGATE

Affected: 16.04 · 18.04 · 20.04 · 22.04 · 22.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-3328?

snapd: upgrade to 2.61.1; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-3328 being exploited?

CVE-2022-3328 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-3328 affect?

CVE-2022-3328 affects snapd, ubuntu linux. Severity is high (CVSS 7.8). Race condition in snap-confine's must_mkdir_and_open_with_perms()

How urgent is CVE-2022-3328?

Priority 40/100. High severity; On your watchlist

Software pages

Ubuntu vulnerabilities

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References

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