Detections
Analytics

Alpine: multiple containerd packages: security update to 2.3.5-r0

medium Tenable Self-Hosted Container Security Plugin ID 447709

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - containerd is an open-source container runtime. Prior to 1.7.35, 2.0.12, 2.2.8, and 2.3.5, containerd on
 Linux with the CRI plugin enabled can indefinitely block the drainExecSyncIO goroutine in
 internal/cri/server/container_execsync.go when CRI ExecSync is used by exec probes or lifecycle hooks that
 launch long-lived background child processes retaining standard input and output pipes. The input and
 output drain phase has no default timeout and did not stop when the request context was canceled, so
 repeated ExecSync invocations can accumulate blocked goroutines and host memory. The resulting resource
 exhaustion can cause the OOM killer to terminate containerd, leaving the container runtime unavailable
 until restart. Deployments not using containerd's CRI implementation and containers not running on Linux
 are not affected. This issue is fixed in versions 1.7.35, 2.0.12, 2.2.8, and 2.3.5. (CVE-2026-53495)

Solution

Update the containerd library and its related packages to version 2.3.5-r0 or later.

See Also

https://security.alpinelinux.org/vuln/CVE-2026-53495

Plugin Details

Severity: Medium

ID: 447709

Version: Revision 1.3

Type: Local

Published: 9/6/2026

Updated: 9/21/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.6

CVSS v4

Risk Factor: Medium

Base Score: 6.8

Threat Score: 6.8

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-53495

Vulnerability Information

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2026-53495