Description
containerd is an open source container runtime. A bug was found in containerd prior to versions 1.6.18 and 1.5.18 where supplementary groups are not set up properly inside a container. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container. Downstream applications that use the containerd client library may be affected as well.
This bug has been fixed in containerd v1.6.18 and v.1.5.18. Users should update to these versions and recreate containers to resolve this issue. Users who rely on a downstream application that uses containerd's client library should check that application for a separate advisory and instructions. As a workaround, ensure that the `"USER $USERNAME"` Dockerfile instruction is not used. Instead, set the container entrypoint to a value similar to `ENTRYPOINT ["su", "-", "user"]` to allow `su` to properly set up supplementary groups.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| containerd | containerd | < 1.5.18, >= 1.6.0, < 1.6.18 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | containerd | 1.6.18~ds1-1 | — |
| Debian 13 | containerd | 1.6.18~ds1-1 | — |
| Debian 12 | containerd | 1.6.18~ds1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | containerd | 1.6.12-0ubuntu1~22.04.3 | USN-6202-1 |
| Ubuntu 20.04 LTS | containerd | 1.6.12-0ubuntu1~20.04.3 | USN-6202-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | containerd | 1.6.12-0ubuntu1~18.04.1+esm1 | USN-6202-1 |
| Ubuntu Pro 16.04 LTS | containerd | 1.2.6-0ubuntu1~16.04.6+esm4 | USN-6202-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | buildah +1 | 1:1.31.3-1.el9 | RHSA-2023:6473 |
| RHEL 9 | podman +5 | 2:4.6.1-5.el9 | RHSA-2023:6474 |
| RHEL 8 | buildah +1 | 1:1.31.3-1.module+el8.9.0+19761+326da906 | RHSA-2023:6939 |
| RHEL 8 | cockpit-podman | 75-1.module+el8.9.0+19761+326da906 | RHSA-2023:6939 |
| RHEL 8 | conmon | 3:2.1.8-1.module+el8.9.0+19761+326da906 | RHSA-2023:6939 |
| RHEL 8 | container-selinux | 2:2.221.0-1.module+el8.9.0+19685+019f3589 | RHSA-2023:6939 |
| RHEL 8 | containernetworking-plugins | 1:1.3.0-4.module+el8.9.0+19649+5879504a | RHSA-2023:6939 |
| RHEL 8 | containers-common | 2:1-54.module+el8.9.0+19761+326da906 | RHSA-2023:6939 |
| RHEL 8 | crit +4 | 3.18-4.module+el8.9.0+19090+d2921118 | RHSA-2023:6939 |
| RHEL 8 | crun | 1.8.7-1.module+el8.9.0+19731+94cfa27e | RHSA-2023:6939 |
| RHEL 8 | fuse-overlayfs | 1.12-1.module+el8.9.0+19090+d2921118 | RHSA-2023:6939 |
| RHEL 8 | libslirp +1 | 4.4.0-1.module+el8.9.0+19244+655f84ee | RHSA-2023:6939 |
| RHEL 8 | netavark +1 | 2:1.7.0-1.module+el8.9.0+19244+655f84ee | RHSA-2023:6939 |
| RHEL 8 | oci-seccomp-bpf-hook | 1.2.9-1.module+el8.9.0+19090+d2921118 | RHSA-2023:6939 |
| RHEL 8 | podman +6 | 3:4.6.1-4.module+el8.9.0+19761+326da906 | RHSA-2023:6939 |
| RHEL 8 | python-podman +1 | 4.6.0-1.module+el8.9.0+19513+83322573 | RHSA-2023:6939 |
| RHEL 8 | runc | 1:1.1.9-1.module+el8.9.0+19648+0d5ae0ec | RHSA-2023:6939 |
| RHEL 8 | skopeo +1 | 2:1.13.3-1.module+el8.9.0+19761+326da906 | RHSA-2023:6939 |
| RHEL 8 | slirp4netns | 1.2.1-1.module+el8.9.0+19731+94cfa27e | RHSA-2023:6939 |
| RHEL 8 | toolbox +1 | 0.0.99.4-5.module+el8.9.0+19655+b08391f8 | RHSA-2023:6939 |
| RHEL 8 | udica | 0.2.6-20.module+el8.9.0+19244+655f84ee | RHSA-2023:6939 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Serverless 1 | openshift-serverless-clients | 1.8.1-3.el8 | RHSA-2023:3450 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | buildah +1 | 1:1.31.3-1.el9 | ALSA-2023:6473 |
| AlmaLinux 9 | podman +5 | 2:4.6.1-5.el9 | ALSA-2023:6474 |
| AlmaLinux 8 | aardvark-dns | 2:1.7.0-1.module_el8.9.0+3657+d86e192f | ALSA-2023:6939 |
| AlmaLinux 8 | buildah +1 | 1:1.31.3-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | cockpit-podman | 75-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | conmon | 3:2.1.8-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | container-selinux | 2:2.221.0-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | containernetworking-plugins | 1:1.3.0-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | containers-common | 2:1-54.module_el8.9.0+3673+0c64b403 | ALSA-2023:6939 |
| AlmaLinux 8 | crit +4 | 3.18-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | crun | 1.8.7-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | fuse-overlayfs | 1.12-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | libslirp +1 | 4.4.0-1.module_el8.8.0+3615+3543c705 | ALSA-2023:6939 |
| AlmaLinux 8 | netavark | 2:1.7.0-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | oci-seccomp-bpf-hook | 1.2.9-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | podman +6 | 3:4.6.1-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | python3-podman | 4.6.0-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | runc | 1:1.1.9-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | skopeo +1 | 2:1.13.3-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | slirp4netns | 1.2.1-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | toolbox +1 | 0.0.99.4-5.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux 8 | udica | 0.2.6-20.module_el8.8.0+3615+3543c705 | ALSA-2023:6939 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | libslirp | 4.4.0-1.module+el8.9.0+1445+07728297 | RLSA-2023:6939 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | helm | 3.13.1-150000.1.26.1 | SUSE-SU-2023:4124-1 |
| SLES 15 SP4 | containerd | 1.6.19-150000.87.1 | SUSE-SU-2023:1827-1 |
| SLES 15 SP4 | helm | 3.13.1-150000.1.26.1 | SUSE-SU-2023:4124-1 |
| SLES 15 SP3 | helm | 3.13.1-150000.1.26.1 | SUSE-SU-2023:4124-1 |
| SLES 12 | containerd | 1.6.19-16.76.1 | SUSE-SU-2023:1826-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | helm | 3.13.1-150000.1.26.1 | SUSE-SU-2023:4124-1 |
| SLE Micro 5.4 | containerd | 1.6.19-150000.87.1 | SUSE-SU-2023:1827-1 |
| SLE Micro 5.3 | containerd | 1.6.19-150000.87.1 | SUSE-SU-2023:1827-1 |
| SLE Micro 5.2 | containerd | 1.6.19-150000.87.1 | SUSE-SU-2023:1827-1 |
| SLE Micro 5.1 | containerd | 1.6.19-150000.87.1 | SUSE-SU-2023:1827-1 |
| SLE HPC 15 SP3 | helm | 3.13.1-150000.1.26.1 | SUSE-SU-2023:4124-1 |
| SUSE Enterprise Storage 7.1 | helm | 3.13.1-150000.1.26.1 | SUSE-SU-2023:4124-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | containerd | 1.6.19-1.1 | openSUSE-SU-2024:12822-1 |
| openSUSE Tumbleweed | helm | 3.13.0-2.1 | openSUSE-SU-2024:13295-1 |
| openSUSE Tumbleweed | helm3 | 3.19.2-1.1 | openSUSE-SU-2025:15779-1 |
| openSUSE Leap 15.4 | containerd | 1.6.19-150000.87.1 | SUSE-SU-2023:1827-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | containerd | 1.6.19-150000.87.1 | SUSE-SU-2023:1827-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | containerd | 1.6.18-r0 | — |
| Alpine v3.23 | containerd | 1.6.18-r0 | — |
| Alpine v3.22 | containerd | 1.6.18-r0 | — |
| Alpine v3.21 | containerd | 1.6.18-r0 | — |
| Alpine v3.20 | containerd | 1.6.18-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | containerd | 1.6.18-r0 | — |
| Alpine v3.18 | containerd | 1.6.18-r0 | — |
| Alpine v3.17 | containerd | 1.6.18-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | containerd +1 | 1.6.19-1.amzn2023.0.1 | ALAS2023-2023-156 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | moby-containerd | 1.6.18-2 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | buildah +1 | 1:1.31.3-1.0.1.el9 | ELSA-2023-6473 |
| Oracle Linux 9 | podman +5 | 2:4.6.1-5.0.1.el9 | ELSA-2023-6474 |
| Oracle Linux 8 | buildah +1 | 1:1.31.3-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | cockpit-podman | 75-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | conmon | 3:2.1.8-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | container-selinux | 2:2.221.0-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | containernetworking-plugins | 1:1.3.0-4.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | containers-common | 2:1-54.0.1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | crit +4 | 3.18-4.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | crun | 1.8.7-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | fuse-overlayfs | 1.12-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | libslirp +1 | 4.4.0-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | netavark +1 | 2:1.7.0-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | oci-seccomp-bpf-hook | 1.2.9-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | podman +6 | 3:4.6.1-4.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | python3-podman | 4.6.0-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | runc | 1:1.1.9-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | skopeo +1 | 2:1.13.3-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | slirp4netns | 1.2.1-1.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
| Oracle Linux 8 | udica | 0.2.6-20.module+el8.9.0+90021+ce997450 | ELSA-2023-6939 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | ctop | 0.7.7-r13 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/containerd/containerd | < 1.5.18 | 1.5.18 | GHSA-hmfx-3pcx-653p |
| Go | github.com/containerd/containerd | >= 1.6.0, < 1.6.18 | 1.6.18 | GHSA-hmfx-3pcx-653p |
| Go | github.com/containerd/containerd | < 1.5.18 · >= 1.6.0, < 1.6.18 | 1.5.18, 1.6.18 | GO-2023-1574 |
Advisories 23
- ALSA-2023:6473 Moderate: buildah security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:6474 Moderate: podman security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:6939 Moderate: container-tools:rhel8 security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:6939 Red Hat Security Advisory: container-tools:rhel8 security and bug fix update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2023:6474 Red Hat Security Advisory: podman security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2023:6473 Red Hat Security Advisory: buildah security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2023:3450 Red Hat Security Advisory: OpenShift Serverless Client kn 1.29.0 release Red Hat Security Advisories (RHSA) · Oct 20, 2026
- USN-6202-1 containerd vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- openSUSE-SU-2024:12822-1 containerd-1.6.19-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13295-1 helm-3.13.0-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:15779-1 helm3-3.19.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1826-1 Security update for containerd SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4124-1 Security update for helm SUSE / openSUSE Security Updates · Feb 4, 2026
- RLSA-2023:6939 Moderate: container-tools:rhel8 security and bug fix update Rocky Linux Security Advisories · Nov 28, 2025
- WID-SEC-2023-1141 Red Hat Enterprise Linux Migration Toolkit for Containers: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 27, 2025
- SUSE-SU-2023:1827-1 Security update for containerd SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-1591 Juniper JUNOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2024
- WID-SEC-2023-1194 Red Hat OpenShift: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jan 1, 2024
- WID-SEC-2023-3146 IBM MQ Operator and Queue manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 13, 2023
- ELSA-2023-6939 Moderate: container-tools:ol8 security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 18, 2023
- ELSA-2023-6473 Moderate: buildah security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 11, 2023
- ELSA-2023-6474 Moderate: podman security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 11, 2023
- ALAS2023-2023-156 Moderate: containerd security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 4, 2023
References
- https://github.com/containerd/containerd/security/advisories/GHSA-hmfx-3pcx-653p
- https://github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4
- https://github.com/containerd/containerd/commit/133f6bb6cd827ce35a5fb279c1ead12b9d21460a
- https://github.com/advisories/GHSA-4wjj-jwc9-2x96
- https://github.com/advisories/GHSA-fjm8-m7m6-2fjp
- https://github.com/advisories/GHSA-phjr-8j92-w5v7
- https://github.com/containerd/containerd/releases/tag/v1.5.18
- https://github.com/containerd/containerd/releases/tag/v1.6.18
- https://www.benthamsgaze.org/2022/08/22/vulnerability-in-linux-containers-investigation-and-mitigation/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZTE4ITXXPIWZEQ4HYQCB6N6GZIMWXDAI/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LYZOKMMVX4SIEHPJW3SJUQGMO5YZCPHC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XNF4OLYZRQE75EB5TW5N42FSXHBXGWFE/