CVE-2019-13178: modules/luksbootkeyfile/main.py in Calamares versions 3.1 through 3.2.10 has a race condition between the time

This week

HIGH 8.1REMOTEUPGRADE

CVE-2019-13178 is a high-severity flaw (CVSS 8.1) affecting calamares. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

modules/luksbootkeyfile/main.py in Calamares versions 3.1 through 3.2.10 has a race condition between the time when the LUKS encryption keyfile is created and when secure permissions are set.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-362
Published	2019-07-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: calamares

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

Am I affected?

Timeline

2019-07-02 23:15 UTCPublished CVE record published
2026-06-17 02:16 UTCUpdated Record last modified

calamares calamares UPGRADE

Affected: >= 3.1 and <= 3.2.10

Fixed in: newer than 3.2.10

Safe to downgrade to: a release before 3.1

1. Check installed version

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

2. UPGRADE to newer than 3.2.10 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade calamares

Note

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

3. If no update is available yet, DOWNGRADE to a release before 3.1 (Debian / Ubuntu)

apt-cache madison calamares sudo apt install calamares=<VERSION_BEFORE_3.1> sudo apt-mark hold calamares

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list calamares sudo dnf downgrade calamares-<VERSION_BEFORE_3.1> sudo dnf versionlock add calamares

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2019-13178?

calamares: upgrade to newer than 3.2.10. Exact commands for each OS are on this page.

Is CVE-2019-13178 being exploited?

CVE-2019-13178 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-2019-13178 affect?

CVE-2019-13178 affects calamares. Severity is high (CVSS 8.1). modules/luksbootkeyfile/main.py in Calamares versions 3.1 through 3.2.10 has a race condition between the time when the LUKS encryption keyfile is created and when secure permissions are set.

How urgent is CVE-2019-13178?

Priority 58/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2019-13179 HIGH 7.5 UPGRADE Calamares versions 3.1 through 3.2.10 copies a LUKS encryption keyfile from /crypto_keyfile.bin (mode 0600 own

References

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