CVE-2020-8945: The proglottis Go wrapper before 0.1.1 for the GPGME library has a use-after-free, as demonstrated by use for

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HIGH 7.5WATCHLISTUPGRADEDOWNGRADEDOWNGRADE

CVE-2020-8945 is a high-severity flaw (CVSS 7.5) affecting gpgme, openshift container platform, openshift container platform for ibm z. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The proglottis Go wrapper before 0.1.1 for the GPGME library has a use-after-free, as demonstrated by use for container image pulls by Docker or CRI-O. This leads to a crash or potential code execution during GPG signature verification.

Why this priority

High severity
EPSS top 8%: very likely to be exploited
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	5.1% (top 8%)
CISA exploited list	No
Weakness	CWE-416
Published	2020-02-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fedoraproject · gpgme project · redhat

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

Am I affected?

Timeline

2020-02-12 18:15 UTCPublished CVE record published
2026-06-17 03:27 UTCUpdated Record last modified

gpgme project gpgme UPGRADE

Affected: < 0.1.1

Fixed in: 0.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.1.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gpgme

Note

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

redhat openshift container platform DOWNGRADE

Affected: 3.11 · 4.1 · 4.2 · 4.3 · 4.4 · 4.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.11

1. Check installed version

apt-cache policy openshift-container-platform || rpm -q openshift-container-platform || openshift-container-platform --version

2. No fixed release: DOWNGRADE to a release before 3.11 (Debian / Ubuntu)

apt-cache madison openshift-container-platform sudo apt install openshift-container-platform=<VERSION_BEFORE_3.11> sudo apt-mark hold openshift-container-platform

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openshift-container-platform sudo dnf downgrade openshift-container-platform-<VERSION_BEFORE_3.11> sudo dnf versionlock add openshift-container-platform

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.

redhat openshift container platform for ibm z DOWNGRADE

Affected: 4.1 · 4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1

1. Check installed version

apt-cache policy openshift-container-platform-for-ibm-z || rpm -q openshift-container-platform-for-ibm-z || openshift-container-platform-for-ibm-z --version

2. No fixed release: DOWNGRADE to a release before 4.1 (Debian / Ubuntu)

apt-cache madison openshift-container-platform-for-ibm-z sudo apt install openshift-container-platform-for-ibm-z=<VERSION_BEFORE_4.1> sudo apt-mark hold openshift-container-platform-for-ibm-z

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openshift-container-platform-for-ibm-z sudo dnf downgrade openshift-container-platform-for-ibm-z-<VERSION_BEFORE_4.1> sudo dnf versionlock add openshift-container-platform-for-ibm-z

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.

redhat openshift container platform for linuxone DOWNGRADE

Affected: 4.1 · 4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1

1. Check installed version

apt-cache policy openshift-container-platform-for-linuxone || rpm -q openshift-container-platform-for-linuxone || openshift-container-platform-for-linuxone --version

2. No fixed release: DOWNGRADE to a release before 4.1 (Debian / Ubuntu)

apt-cache madison openshift-container-platform-for-linuxone sudo apt install openshift-container-platform-for-linuxone=<VERSION_BEFORE_4.1> sudo apt-mark hold openshift-container-platform-for-linuxone

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openshift-container-platform-for-linuxone sudo dnf downgrade openshift-container-platform-for-linuxone-<VERSION_BEFORE_4.1> sudo dnf versionlock add openshift-container-platform-for-linuxone

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.

fedoraproject fedora MITIGATE

Affected: 30 · 31 · 32

Fixed in: no fixed release known

Safe to downgrade to: a release before 30

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.

redhat enterprise linux for ibm z systems MITIGATE

Affected: 7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0

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-2020-8945?

gpgme: upgrade to 0.1.1; openshift container platform: downgrade or apply the listed mitigation; openshift container platform for ibm z: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-8945 being exploited?

CVE-2020-8945 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-2020-8945 affect?

CVE-2020-8945 affects gpgme, openshift container platform, openshift container platform for ibm z. Severity is high (CVSS 7.5). The proglottis Go wrapper before 0.1.1 for the GPGME library has a use-after-free, as demonstrated by use for container image pulls by Docker or CRI-O. This leads to a crash or potential code execution during GPG signature verification.

How urgent is CVE-2020-8945?

Priority 59/100. High severity; EPSS top 8%: very likely to be exploited; Public exploit reference; On your watchlist

Software pages

Docker vulnerabilities · Red Hat OpenShift vulnerabilities

Related CVEs

CVE-2014-3564 MEDIUM 6.8 UPGRADE MITIGATE Multiple heap-based buffer overflows in the status_handler function in (1) engine-gpgsm.c and (2) engine-uiser

References

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