Ubuntu 26.04 containerd Denial of Service Arbitrary Code Exec USN-8471

Several security issues were fixed in containerd. Software Description: - containerd: open and reliable container runtime library Details: It was discovered that containerd incorrectly handled HTTP/2 SETTINGS frames. A remote attacker could possibly use this issue to cause containerd to enter an infinite loop, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2026-33814) Jakub Ciolek and Kyle Elliott discovered that containerd incorrectly handled group parsing when creating containers from images. An attacker could possibly use this issue to cause containerd to consume excessive memory, resulting in a denial of service. (CVE-2026-47262) Robert Prast discovered that containerd incorrectly propagated labels from image configurations to containers. An attacker could possibly use this issue to execute arbitrary code on the host. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubun... Read the Full Advisory

Several security issues were fixed in containerd.

Software Description:

- containerd: open and reliable container runtime library

It was discovered that containerd incorrectly handled HTTP/2 SETTINGS

frames. A remote attacker could possibly use this issue to cause containerd

to enter an infinite loop, resulting in a denial of service. This issue

only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and

Ubuntu 22.04 LTS. (CVE-2026-33814)

Jakub Ciolek and Kyle Elliott discovered that containerd incorrectly

handled group parsing when creating containers from images. An attacker

could possibly use this issue to cause containerd to consume excessive

memory, resulting in a denial of service. (CVE-2026-47262)

Robert Prast discovered that containerd incorrectly propagated labels

from image configurations to containers. An attacker could possibly use

this issue to execute arbitrary code on the host. This issue only affected

Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubun...

The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS golang-github-containerd-containerd-api-dev 1.7.24~ds1-10ubuntu1+esm1 Available with Ubuntu Pro golang-github-containerd-containerd-dev 1.7.24~ds1-10ubuntu1+esm1 Available with Ubuntu Pro Ubuntu 24.04 LTS golang-github-containerd-containerd-dev 1.6.24~ds1-1ubuntu1.3+esm3 Available with Ubuntu Pro Ubuntu 22.04 LTS golang-github-containerd-containerd-dev 1.6.12-0ubuntu1~22.04.11 Ubuntu 20.04 LTS golang-github-containerd-containerd-dev 1.6.12-0ubuntu1~20.04.8+esm2 Available with Ubuntu Pro Ubuntu 18.04 LTS containerd 1.6.12-0ubuntu1~18.04.1+esm4 Available with Ubuntu Pro golang-github-containerd-containerd-dev 1.6.12-0ubuntu1~18.04.1+esm4 Available with Ubuntu Pro Ubuntu 16.04 LTS containerd 1.2.6-0ubuntu1~16.04.6+esm7 Available with Ubuntu Pro golang-github-docker-containerd-dev 1.2.6-0ubuntu1~16.04.6+esm7 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.

CVE-2026-33814, CVE-2026-47262, CVE-2026-53488

Ubuntu Security Notice USN-8471-1

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