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Fencer Vulns
medium 5.7

CVE-2022-23471 json

containerd CRI stream server: Host memory exhaustion through terminal resize goroutine leak

published 2022-12-07 3 y ago modified 2026-09-10 1 mo ago also GHSA-2qjp-425j-52j9 , GO-2022-1147 , EUVD-2022-7476

cvss
5.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

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.

Patch / fix

  • go github.com/containerd/containerd 1.5.16, 1.6.12
  • linuxfoundation containerd 1.5.16, 1.6.12
  • containerd Debian 14, Debian 13, Debian 12 1.6.12~ds1-1

debian advisories DEBIAN-CVE-2022-23471

  • containerd Ubuntu 18.04 LTS 1.5.9-0ubuntu1~18.04.2
  • containerd Ubuntu 20.04 LTS 1.5.9-0ubuntu1~20.04.6
  • containerd Ubuntu 22.04 LTS 1.5.9-0ubuntu3.1

ubuntu advisories UBUNTU-CVE-2022-23471

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • containerd SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES for SAP 15 SP1 +15 more 1.6.16-150000.82.2
  • containerd SLE Module for Containers 12 1.6.16-16.71.1
  • containerd SLES for SAP 15 SP2, SLES for SAP 15 SP1, SLES for SAP 15 +26 more 1.6.12-150000.79.1
  • containerd SLE Module for Containers 12 1.6.12-16.68.1

suse advisories SUSE-SU-2023:1628-1SUSE-SU-2023:1566-1SUSE-SU-2022:4463-1SUSE-SU-2022:4409-1

  • containerd openSUSE Tumbleweed 1.6.12-1.1

opensuse advisories openSUSE-SU-2024:12558-1

  • containerd Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 1.6.12-r0

alpine advisories ALPINE-CVE-2022-23471

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • moby-containerd CBL-Mariner 2.0 1.6.12-3

azure linux advisories AZL-11585

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-23471 updated cvss 6.5

containerd: host memory exhaustion

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-24-046-11 updated cvss 5.7

Siemens SCALANCE XCM-/XRM-300

  • Siemens SCALANCE XCH328 (6GK5328-4TS01-2EC2) <V2.4 Siemens SCALANCE XCM324 (6GK5324-8TS01-2AC2) <V2.4 Siemens SCALANCE XCM328 (6GK5328-4TS01-2AC2) <V2.4 Siemens SCALANCE XCM332 (6GK5332-0GA01-2AC2) <V2.4 Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) (6GK5334-2TS01-2ER3) <V2.4 Siemens SCALANCE XRM334 (2x230 V AC, 8xFO) (6GK5334-2TS01-4AR3) <V2.4
    +5 more products
    Siemens SCALANCE XRM334 (2x230 V AC, 12xFO) (6GK5334-3TS01-4AR3) <V2.4 Siemens SCALANCE XRM334 (24 V DC, 8xFO) (6GK5334-2TS01-2AR3) <V2.4 Siemens SCALANCE XRM334 (24 V DC, 12xFO) (6GK5334-3TS01-2AR3) <V2.4 Siemens SCALANCE XRM334 (230 V AC, 8xFO) (6GK5334-2TS01-3AR3) <V2.4 Siemens SCALANCE XRM334 (230 V AC, 12xFO) (6GK5334-3TS01-3AR3) <V2.4
    affected: fixed in V2.4 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 5.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/containerd/containerd
<1.5.16
>=1.6.0, <1.6.12
1.5.16
1.6.12

Affected products

  • containerd containerd

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-401 Missing Release of Memory after Effective Lifetime

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.