containerd vulnerabilities
Published: Thu, 25 Jun 2026 13:14
Summary
Several security issues were fixed in containerd.
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. (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) Henry Beberman and Robert Prast discovered that containerd incorrectly validated image references when importing container checkpoints. An attacker could possibly use this issue to poison the local image cache and execute arbitrary code in other pods. (CVE-2026-50195) 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. (CVE-2026-53488) Yuming Zhang, Song Li, Sangwon Ryu, Henry Beberman, Robert Prast, Kyle Elliott and Zhenchen Wang discovered that containerd incorrectly validated symlinked paths when restoring container checkpoints. An attacker could possibly use this issue to read arbitrary files on the host, resulting in information disclosure. (CVE-2026-53489) Robert Prast discovered that containerd incorrectly trusted device interface annotations when restoring container checkpoints. An attacker could possibly use this issue to bypass resource allocation restrictions and inject devices or host mounts into a container. (CVE-2026-53492)
Recommended actions per Ubuntu release
StackPatch playbook auto-generated per release codename and per affected package.
Ubuntu questing
containerd-stable→2.1.6-0ubuntu1~25.10.2apt_upgradeStandard apt upgrade. Install 2.1.6-0ubuntu1~25.10.2 from the apt repo.
sudo apt-get update sudo apt-get install --only-upgrade -y containerd-stable
Most apt upgrades restart their service automatically. needrestart lists anything else.
containerd-stable→2.1.6-0ubuntu1~25.10.2apt_upgradeStandard apt upgrade. Install 2.1.6-0ubuntu1~25.10.2 from the apt repo.
sudo apt-get update sudo apt-get install --only-upgrade -y containerd-stable
Most apt upgrades restart their service automatically. needrestart lists anything else.
Ubuntu resolute
containerd-stable→2.2.2-0ubuntu1.1apt_upgradeStandard apt upgrade. Install 2.2.2-0ubuntu1.1 from the apt repo.
sudo apt-get update sudo apt-get install --only-upgrade -y containerd-stable
Most apt upgrades restart their service automatically. needrestart lists anything else.
containerd-stable→2.2.2-0ubuntu1.1apt_upgradeStandard apt upgrade. Install 2.2.2-0ubuntu1.1 from the apt repo.
sudo apt-get update sudo apt-get install --only-upgrade -y containerd-stable
Most apt upgrades restart their service automatically. needrestart lists anything else.
Are YOU affected by USN-8473-1?
5-second check on your actual server. Reads /etc/os-release, uname -r, and dpkg-query; matches against the live USN + Debian Security Tracker feeds; tells you whether USN-8473-1 (and any other live CVE) applies. Anonymous, no signup.
curl https://mindsparkstack.com/scan.sh | bash
StackPatch runs this match against YOUR installed packages every hour
Free (3 servers) / from $9/mo (14-day free trial) / Solo $9/mo / Pro $29/mo / Team $79/mo. Indie pricing.