containerd CRI stream server: Host memory exhaustion through terminal resize goroutine leak
Summary
containerd CRI stream server: Host memory exhaustion through terminal resize goroutine leak
Original description
The description as published by the source.
containerd is an open source container runtime. A bug was found in containerd's CRI implementation where a user can exhaust memory on the host. In the CRI stream server, a goroutine is launched to handle terminal resize events if a TTY is requested. If the user's process fails to launch due to, for example, a faulty command, the goroutine will be stuck waiting to send without a receiver, resulting in a memory leak. Kubernetes and crictl can both be configured to use containerd's CRI implementation and the stream server is used for handling container IO. This bug has been fixed in containerd 1.6.12 and 1.5.16. Users should update to these versions to resolve the issue. Users unable to upgrade should ensure that only trusted images and commands are used and that only trusted users have permissions to execute commands in running containers.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2022-23471 containerd Fixed in: 1.4.13~ds1-1~deb11u3
- Ubuntu UBUNTU-CVE-2022-23471 containerd
References
- advisory github.com
- advisory nvd.nist.gov
- advisory security.gentoo.org
- advisory github.com
- package github.com
- patch github.com
- web github.com
- web github.com
- web github.com