CVE-2026-53495
github.com/containerd/containerd: containerd: Denial of Service via CRI ExecSync goroutine leak
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 15, 2026
Updated · November 1, 2026
Description
A flaw was found in containerd. When the Container Runtime Interface (CRI) plugin is enabled on Linux, repeated use of CRI ExecSync by exec probes or lifecycle hooks can cause goroutines to become indefinitely blocked. This leads to resource exhaustion and can terminate the containerd process, making the container runtime unavailable. This issue specifically affects deployments utilizing containerd's CRI implementation on Linux.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime