# CVE-2021-32760: containerd: containerd is a container runtime

CVE-2021-32760 is fixed in 3 products on 1 platform, first by containerd 1.5.2-0ubuntu1~18.04.2, released July 19, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-32760
- Priority: High
- CVSS: n/a (High)
- EPSS: 0.0160
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 19, 2021

## Description

containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the host’s filesystem. Changes to file permissions can deny access to the expected owner of the file, widen access to others, or set extended bits like setuid, setgid, and sticky. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in containerd 1.5.4 and 1.4.8. As a workaround, ensure that users only pull images from trusted sources. Linux security modules (LSMs) like SELinux and AppArmor can limit the files potentially affected by this bug through policies and profiles that prevent containerd from interacting with specific files.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | containerd Ubuntu 18.04.6 LTS (bionic) | 1.5.2-0ubuntu1~18.04.2 | [containerd 1.5.2-0ubuntu1~18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-containerd-1.5.2-0ubuntu1-18.04.2.md) | Jul 19, 2021 |
| Linux | containerd Ubuntu 20.04 LTS (focal) | 1.5.2-0ubuntu1~20.04.2 | [containerd 1.5.2-0ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-containerd-1.5.2-0ubuntu1-20.04.2.md) | Jul 19, 2021 |
| Linux | golang-github-containerd-containerd-dev Ubuntu 18.04.6 LTS (bionic) | 1.5.2-0ubuntu1~18.04.2 | [golang-github-containerd-containerd-dev 1.5.2-0ubuntu1~18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-golang-github-containerd-containerd-dev-1.5.2-0ubuntu1-18.04.2.md) | Jul 19, 2021 |
| Linux | golang-github-containerd-containerd-dev Ubuntu 20.04 LTS (focal) | 1.5.2-0ubuntu1~20.04.2 | [golang-github-containerd-containerd-dev 1.5.2-0ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-golang-github-containerd-containerd-dev-1.5.2-0ubuntu1-20.04.2.md) | Jul 19, 2021 |
| Linux | golang-github-docker-containerd-dev Ubuntu 18.04.6 LTS (bionic) | 1.5.2-0ubuntu1~18.04.2 | [golang-github-docker-containerd-dev 1.5.2-0ubuntu1~18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-golang-github-docker-containerd-dev-1.5.2-0ubuntu1-18.04.2.md) | Jul 19, 2021 |
| Linux | golang-github-docker-containerd-dev Ubuntu 20.04 LTS (focal) | 1.5.2-0ubuntu1~20.04.2 | [golang-github-docker-containerd-dev 1.5.2-0ubuntu1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-golang-github-docker-containerd-dev-1.5.2-0ubuntu1-20.04.2.md) | Jul 19, 2021 |

---

Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.