Description
In Docker before versions 9.03.15, 20.10.3 there is a vulnerability involving the --userns-remap option in which access to remapped root allows privilege escalation to real root. When using "--userns-remap", if the root user in the remapped namespace has access to the host filesystem they can modify files under "/var/lib/docker/<remapping>" that cause writing files with extended privileges. Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| moby | moby | < 19.03.15, >= 20.0.0, < 20.10.3 | — |
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 | docker.io | 20.10.3+dfsg1-1 | — |
| Debian 13 | docker.io | 20.10.3+dfsg1-1 | — |
| Debian 12 | docker.io | 20.10.3+dfsg1-1 | — |
| Debian 10 | docker.io | 18.09.1+dfsg1-7.1+deb10u3 | DSA-4865-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | docker.io | 20.10.7-0ubuntu1~20.04.1 | — |
| Ubuntu 18.04 LTS | docker.io | 20.10.7-0ubuntu1~18.04.1 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | docker.io | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLES 15 SP6 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLES 15 SP5 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLES 15 SP4 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLES 15 SP3 | containerd | 1.4.4-5.32.1 | SUSE-SU-2021:1954-1 |
| SLES 15 SP3 | docker | 20.10.6_ce-6.49.3 | SUSE-SU-2021:1954-1 |
| SLES 15 SP3 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLES 15 SP3 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
Show 22 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | containerd | 1.3.9-5.29.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SLES 15 SP2 | docker | 19.03.15_ce-6.43.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SLES 15 SP2 | docker-runc | 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3 | SUSE-SU-2021:0435-1 |
| SLES 15 SP2 | golang-github-docker-libnetwork | 0.7.0.1+gitr2908_55e924b8a842-4.28.3 | SUSE-SU-2021:0435-1 |
| SLES 15 SP2 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SLES 15 SP1 | containerd | 1.3.9-5.29.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SLES 15 SP1 | docker | 19.03.15_ce-6.43.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SLES 15 SP1 | docker-runc | 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3 | SUSE-SU-2021:0435-1 |
| SLES 15 SP1 | golang-github-docker-libnetwork | 0.7.0.1+gitr2908_55e924b8a842-4.28.3 | SUSE-SU-2021:0435-1 |
| SLES 15 SP1 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SLES 15 | containerd | 1.4.4-5.32.1 | SUSE-SU-2021:1954-1 |
| SLES 15 | docker | 20.10.6_ce-6.49.3 | SUSE-SU-2021:1954-1 |
| SLES 15 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SLES 12 SP5 | docker-stable | 24.0.9_ce-1.20.1 | SUSE-SU-2025:03540-1 |
| SLES 12 | containerd | 1.3.9-16.35.1 | SUSE-SU-2021:1458-1, SUSE-SU-2021:0445-1 |
| SLES 12 | docker | 19.03.15_ce-98.60.2 | SUSE-SU-2021:1458-1, SUSE-SU-2021:0445-1 |
| SLES 12 | docker-runc | 1.0.0rc10+gitr3981_dc9208a3303f-1.52.1 | SUSE-SU-2021:0445-1 |
| SLES 12 | golang-github-docker-libnetwork | 0.7.0.1+gitr2908_55e924b8a842-37.1 | SUSE-SU-2021:0445-1 |
| SLES 12 | runc | 1.0.0~rc93-16.8.1 | SUSE-SU-2021:1458-1 |
| SLES for SAP 15 SP5 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLES for SAP 15 SP4 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLES for SAP 15 SP3 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLES for SAP 15 SP1 | containerd | 1.3.9-5.29.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SLES for SAP 15 SP1 | docker | 19.03.15_ce-6.43.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SLES for SAP 15 SP1 | docker-runc | 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3 | SUSE-SU-2021:0435-1 |
| SLES for SAP 15 SP1 | golang-github-docker-libnetwork | 0.7.0.1+gitr2908_55e924b8a842-4.28.3 | SUSE-SU-2021:0435-1 |
| SLES for SAP 15 SP1 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SLES for SAP 15 | containerd | 1.4.4-5.32.1 | SUSE-SU-2021:1954-1 |
| SLES for SAP 15 | docker | 20.10.6_ce-6.49.3 | SUSE-SU-2021:1954-1 |
| SLES for SAP 15 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SLE Micro 5.0 | containerd | 1.4.4-5.32.1 | SUSE-SU-2021:1954-1 |
| SLE Micro 5.0 | docker | 20.10.6_ce-6.49.3 | SUSE-SU-2021:1954-1 |
| SLE Micro 5.0 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SLE HPC 15 SP5 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLE HPC 15 SP4 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLE HPC 15 SP3 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SLE HPC 15 SP1 | containerd | 1.3.9-5.29.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SLE HPC 15 SP1 | docker | 19.03.15_ce-6.43.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SLE HPC 15 SP1 | docker-runc | 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3 | SUSE-SU-2021:0435-1 |
| SLE HPC 15 SP1 | golang-github-docker-libnetwork | 0.7.0.1+gitr2908_55e924b8a842-4.28.3 | SUSE-SU-2021:0435-1 |
| SLE HPC 15 SP1 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SLE HPC 15 | containerd | 1.4.4-5.32.1 | SUSE-SU-2021:1954-1 |
| SLE HPC 15 | docker | 20.10.6_ce-6.49.3 | SUSE-SU-2021:1954-1 |
| SLE HPC 15 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SUSE Manager Server 4.0 | containerd | 1.3.9-5.29.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SUSE Manager Server 4.0 | docker | 19.03.15_ce-6.43.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SUSE Manager Server 4.0 | docker-runc | 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3 | SUSE-SU-2021:0435-1 |
| SUSE Manager Server 4.0 | golang-github-docker-libnetwork | 0.7.0.1+gitr2908_55e924b8a842-4.28.3 | SUSE-SU-2021:0435-1 |
| SUSE Manager Server 4.0 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SUSE Manager Retail Branch Server 4.0 | containerd | 1.3.9-5.29.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SUSE Manager Retail Branch Server 4.0 | docker | 19.03.15_ce-6.43.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SUSE Manager Retail Branch Server 4.0 | docker-runc | 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3 | SUSE-SU-2021:0435-1 |
| SUSE Manager Retail Branch Server 4.0 | golang-github-docker-libnetwork | 0.7.0.1+gitr2908_55e924b8a842-4.28.3 | SUSE-SU-2021:0435-1 |
| SUSE Manager Retail Branch Server 4.0 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SUSE Manager Proxy 4.0 | containerd | 1.3.9-5.29.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SUSE Manager Proxy 4.0 | docker | 19.03.15_ce-6.43.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SUSE Manager Proxy 4.0 | docker-runc | 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3 | SUSE-SU-2021:0435-1 |
| SUSE Manager Proxy 4.0 | golang-github-docker-libnetwork | 0.7.0.1+gitr2908_55e924b8a842-4.28.3 | SUSE-SU-2021:0435-1 |
| SUSE Manager Proxy 4.0 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SUSE Enterprise Storage 7.1 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| SUSE Enterprise Storage 7 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
| SUSE Enterprise Storage 6 | containerd | 1.3.9-5.29.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SUSE Enterprise Storage 6 | docker | 19.03.15_ce-6.43.3 | SUSE-SU-2021:1954-1, SUSE-SU-2021:0435-1 |
| SUSE Enterprise Storage 6 | docker-runc | 1.0.0rc10+gitr3981_dc9208a3303f-6.45.3 | SUSE-SU-2021:0435-1 |
| SUSE Enterprise Storage 6 | golang-github-docker-libnetwork | 0.7.0.1+gitr2908_55e924b8a842-4.28.3 | SUSE-SU-2021:0435-1 |
| SUSE Enterprise Storage 6 | runc | 1.0.0~rc93-1.14.2 | SUSE-SU-2021:1954-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | docker | 20.10.6_ce-2.1 | openSUSE-SU-2024:10722-1 |
| openSUSE Tumbleweed | docker-stable | 24.0.9_ce-15.1 | openSUSE-SU-2025:15589-1 |
| openSUSE Leap 15.6 | docker-stable | 24.0.9_ce-150000.1.25.1 | SUSE-SU-2025:03545-1 |
| openSUSE Leap 15.3 | containerd | 1.4.4-5.32.1 | openSUSE-SU-2021:1954-1 |
| openSUSE Leap 15.3 | docker | 20.10.6_ce-6.49.3 | openSUSE-SU-2021:1954-1 |
| openSUSE Leap 15.3 | runc | 1.0.0~rc93-1.14.2 | openSUSE-SU-2021:1954-1 |
| openSUSE Leap 15.2 | containerd | 1.3.9-lp152.2.3.1 | openSUSE-SU-2021:0878-1, openSUSE-SU-2021:0278-1 |
| openSUSE Leap 15.2 | docker | 19.03.15_ce-lp152.2.3.1 | openSUSE-SU-2021:0878-1, openSUSE-SU-2021:0278-1 |
| openSUSE Leap 15.2 | docker-runc | 1.0.0rc10+gitr3981_dc9208a3303f-lp152.2.3.1 | openSUSE-SU-2021:0278-1 |
| openSUSE Leap 15.2 | fish | 2.7.1-lp152.5.3.1 | openSUSE-SU-2021:0278-1 |
| openSUSE Leap 15.2 | golang-github-docker-libnetwork | 0.7.0.1+gitr2908_55e924b8a842-lp152.2.3.1 | openSUSE-SU-2021:0278-1 |
| openSUSE Leap 15.2 | runc | 1.0.0~rc93-lp152.2.3.1 | openSUSE-SU-2021:0878-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | docker | 20.10.3-r0 | — |
| Alpine v3.23 | docker | 20.10.3-r0 | — |
| Alpine v3.22 | docker | 20.10.3-r0 | — |
| Alpine v3.21 | docker | 20.10.3-r0 | — |
| Alpine v3.20 | docker | 20.10.3-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | docker | 20.10.3-r0 | — |
| Alpine v3.18 | docker | 20.10.3-r0 | — |
| Alpine v3.17 | docker | 20.10.3-r0 | — |
| Alpine v3.16 | docker | 20.10.3-r0 | — |
| Alpine v3.15 | docker | 20.10.3-r0 | — |
| Alpine v3.14 | docker | 20.10.3-r0 | — |
| Alpine v3.13 | docker | 20.10.3-r0 | — |
| Alpine v3.12 | docker | 20.10.3-r0 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | docker-machine-driver-harvester | 1.0.4-r1 | — |
| Wolfi rolling | rancher-machine | 0.15.0.137-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/moby/moby | < 19.3.15 | 19.3.15 | GHSA-7452-xqpj-6rpc |
| Go | github.com/moby/moby | >= 20.10.0-beta1, < 20.10.3 | 20.10.3 | GHSA-7452-xqpj-6rpc |
Advisories 13
- openSUSE-SU-2025:15589-1 docker-stable-24.0.9_ce-15.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:03545-1 Security update for docker-stable SUSE / openSUSE Security Updates · Mar 23, 2026
- DSA-4865-1 docker.io - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2021:0878-1 Security update for containerd, docker, runc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0435-1 Security update for containerd, docker, docker-runc, golang-github-docker-libnetwork SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1954-1 Security update for containerd, docker, runc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0445-1 Security update for containerd, docker, docker-runc, golang-github-docker-libnetwork SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10722-1 docker-20.10.6_ce-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1954-1 Security update for containerd, docker, runc SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:03540-1 Security update for docker-stable SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0278-1 Security update for containerd, docker, docker-runc, golang-github-docker-libnetwork SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1458-1 Security update for containerd, docker, runc SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-2716 docker: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 12, 2025
References
- https://docs.docker.com/engine/release-notes/#20103
- https://github.com/moby/moby/releases/tag/v20.10.3
- https://github.com/moby/moby/releases/tag/v19.03.15
- https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc
- https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c
- https://security.netapp.com/advisory/ntap-20210226-0005/
- DSA-4865 vendor-advisory
- GLSA-202107-23 vendor-advisory