Description
runc is a CLI tool for spawning and running containers according to the OCI specification. In affected versions it was found that rootless runc makes `/sys/fs/cgroup` writable in following conditons: 1. when runc is executed inside the user namespace, and the `config.json` does not specify the cgroup namespace to be unshared (e.g.., `(docker|podman|nerdctl) run --cgroupns=host`, with Rootless Docker/Podman/nerdctl) or 2. when runc is executed outside the user namespace, and `/sys` is mounted with `rbind, ro` (e.g., `runc spec --rootless`; this condition is very rare). A container may gain the write access to user-owned cgroup hierarchy `/sys/fs/cgroup/user.slice/...` on the host . Other users's cgroup hierarchies are not affected. Users are advised to upgrade to version 1.1.5. Users unable to upgrade may unshare the cgroup namespace (`(docker|podman|nerdctl) run --cgroupns=private)`. This is the default behavior of Docker/Podman/nerdctl on cgroup v2 hosts. or add `/sys/fs/cgroup` to `maskedPaths`.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| opencontainers | runc | < 1.1.5 | — |
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 | runc | 1.1.5+ds1-1 | — |
| Debian 13 | runc | 1.1.5+ds1-1 | — |
| Debian 12 | runc | 1.1.5+ds1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | runc | 1.1.4-0ubuntu1~22.04.3 | USN-6088-1 |
| Ubuntu 20.04 LTS | runc | 1.1.4-0ubuntu1~20.04.3 | USN-6088-1 |
| Ubuntu 18.04 LTS | runc | 1.1.4-0ubuntu1~18.04.2 | USN-6088-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | runc | 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4 | USN-6088-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | runc | 4:1.1.9-1.el9 | RHSA-2023:6380 |
| RHEL 8 | buildah +1 | 1:1.24.6-7.module+el8.9.0+19784+443be299 | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | cockpit-podman | 46-1.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | conmon | 2:2.1.4-2.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | container-selinux | 2:2.205.0-3.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | containernetworking-plugins | 1:1.1.1-5.module+el8.9.0+19784+443be299 | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | containers-common | 2:1-38.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | crit +4 | 3.15-3.module+el8.9.0+19243+df4d9ff2 | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | crun | 1.8.3-1.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | fuse-overlayfs | 1.9-2.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | libslirp +1 | 4.4.0-1.module+el8.9.0+19243+df4d9ff2 | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | netavark +1 | 2:1.0.1-38.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | oci-seccomp-bpf-hook | 1.2.5-2.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | podman +6 | 2:4.0.2-24.module+el8.9.0+19784+443be299 | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | python-podman +1 | 4.0.0-2.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | runc | 1:1.1.5-2.module+el8.9.0+19104+fcef53a3 | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | skopeo +1 | 2:1.6.2-8.module+el8.9.0+19104+fcef53a3 | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | slirp4netns | 1.1.8-3.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | toolbox +1 | 0.0.99.4-5.module+el8.9.0+19655+b08391f8 | RHSA-2023:6939, RHSA-2023:6938 |
| RHEL 8 | udica | 0.2.6-4.module+el8.9.0+19098+6e7a5e3f | RHSA-2023:6939, RHSA-2023:6938 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | runc | 4:1.1.9-1.el9 | ALSA-2023:6380 |
| AlmaLinux 8 | buildah +1 | 1:1.24.6-7.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | cockpit-podman | 46-1.module_el8.7.0+3344+5bcd850f | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | conmon | 2:2.1.4-2.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | container-selinux | 2:2.205.0-3.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | containernetworking-plugins | 1:1.1.1-5.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | containers-common | 2:1-38.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | crit +4 | 3.15-3.module_el8.6.0+2877+8e437bf5 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | crun | 1.8.3-1.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | fuse-overlayfs | 1.9-2.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | libslirp +1 | 4.4.0-1.module_el8.6.0+2877+8e437bf5 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | netavark +1 | 2:1.0.1-38.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | oci-seccomp-bpf-hook | 1.2.5-2.module_el8.8.0+3468+16b86c82 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | podman +6 | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | python3-podman | 4.0.0-2.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | runc | 1:1.1.5-2.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | skopeo +1 | 2:1.6.2-8.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | slirp4netns | 1.1.8-3.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | toolbox +1 | 0.0.99.4-5.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
| AlmaLinux 8 | udica | 0.2.6-4.module_el8.9.0+3627+db8ec155 | ALSA-2023:6939, ALSA-2023:6938 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | buildah | 1:1.24.6-7.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | cockpit-podman | 46-1.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | conmon | 2:2.1.4-2.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | container-selinux | 2:2.205.0-3.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | containernetworking-plugins | 1:1.1.1-5.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | containers-common | 2:1-38.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | criu | 3.15-3.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | crun | 1.8.3-1.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | fuse-overlayfs | 1.9-2.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | libslirp | 4.4.0-1.module+el8.9.0+1445+07728297 | RLSA-2023:6939, RLSA-2023:6938 |
| Rocky Linux 8 | oci-seccomp-bpf-hook | 1.2.5-2.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | podman | 2:4.0.2-24.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | python-podman | 4.0.0-2.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | runc | 1:1.1.5-2.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | slirp4netns | 1.1.8-3.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux 8 | udica | 0.2.6-4.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLES 15 SP3 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLES 15 SP2 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLES 15 SP1 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLES 12 | runc | 1.1.5-16.29.1 | SUSE-SU-2023:1726-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLES for SAP 15 SP2 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLES for SAP 15 SP1 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLE Micro 5.4 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLE Micro 5.3 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLE Micro 5.2 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLE Micro 5.1 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLE HPC 15 SP3 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLE HPC 15 SP2 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SLE HPC 15 SP1 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SUSE Enterprise Storage 7.1 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
| SUSE Enterprise Storage 7 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250807T150727-1.1 | openSUSE-SU-2025:15424-1 |
| openSUSE Tumbleweed | runc | 1.1.5-1.1 | openSUSE-SU-2024:12826-1 |
| openSUSE Leap 15.4 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.3 | runc | 1.1.5-150000.41.1 | SUSE-SU-2023:2003-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | runc | 1.1.4-r0 | — |
| Alpine v3.23 | runc | 1.1.4-r0 | — |
| Alpine v3.22 | runc | 1.1.4-r0 | — |
| Alpine v3.21 | runc | 1.1.4-r0 | — |
| Alpine v3.20 | runc | 1.1.4-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | runc | 1.1.4-r0 | — |
| Alpine v3.18 | runc | 1.1.4-r0 | — |
| Alpine v3.17 | runc | 1.1.5-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | runc | 1.1.5-1.amzn2023.0.1 | ALAS2023-2023-208 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | moby-runc | 1.1.5-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | runc | 4:1.1.9-1.el9 | ELSA-2023-6380 |
| Oracle Linux 8 | buildah +1 | 1:1.24.6-5.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | cockpit-podman | 46-1.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | conmon | 2:2.1.4-1.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | container-selinux | 2:2.199.0-1.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | containernetworking-plugins | 1:1.1.1-2.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | containers-common | 2:1-37.0.1.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | crit +4 | 3.15-3.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | crun | 1.6-1.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | fuse-overlayfs | 1.9-1.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | libslirp +1 | 4.4.0-1.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | netavark +1 | 2:1.0.1-37.0.1.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | oci-seccomp-bpf-hook | 1.2.5-2.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | podman +6 | 2:4.0.2-20.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | python3-podman | 4.0.0-1.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | runc | 1:1.1.4-1.0.1.module+el8.8.0+21118+db7590d7 | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | skopeo +1 | 2:1.6.2-6.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | slirp4netns | 1.1.8-2.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
| Oracle Linux 8 | udica | 0.2.6-3.module+el8.8.0+20984+ab6ce66c | ELSA-2023-12579, ELSA-2023-12578, ELSA-2023-6939 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | ctop | 0.7.7-r13 | — |
| Wolfi rolling | podman +1 | 5.2.2-r1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/opencontainers/runc | < 1.1.5 | 1.1.5 | GHSA-m8cg-xc2p-r3fc |
Advisories 22
- ALSA-2023:6380 Moderate: runc security 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
- ALSA-2023:6938 Moderate: container-tools:4.0 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-2023:6938 Red Hat Security Advisory: container-tools:4.0 security and bug fix update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2023:6380 Red Hat Security Advisory: runc security update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- WID-SEC-2024-0794 Dell ECS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- USN-6088-2 runc vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- openSUSE-SU-2025:15424-1 govulncheck-vulndb-0.0.20250807T150727-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- USN-6088-1 runc vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2023:2003-1 Security update for runc SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12826-1 runc-1.1.5-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1726-1 Security update for runc SUSE / openSUSE Security Updates · Feb 4, 2026
- RLSA-2023:6938 Moderate: container-tools:4.0 security and bug fix update Rocky Linux Security Advisories · Nov 28, 2025
- RLSA-2023:6939 Moderate: container-tools:rhel8 security and bug fix update Rocky Linux Security Advisories · Nov 28, 2025
- WID-SEC-2023-1183 docker: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 27, 2025
- ELSA-2023-6939 Moderate: container-tools:ol8 security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 18, 2023
- ELSA-2023-6938 Moderate: container-tools:4.0 security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 18, 2023
- ELSA-2023-6380 Moderate: runc security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Nov 11, 2023
- ELSA-2023-12578 Important: buildah security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 19, 2023
- ELSA-2023-12579 Important: aardvark-dns security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 19, 2023
- ALAS2023-2023-208 Important: runc security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jun 12, 2023