CVE-2026-53495Medium· 6.8▾ Sunlitcontainerd 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 …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 37.4 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
— → 6.8
0.2%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
github.com/containerd/containerd/v2 < 2.0.12github.com/containerd/containerd < 1.7.35github.com/containerd/containerd/v2 >= 2.2.0, < 2.2.8github.com/containerd/containerd/v2 >= 2.3.0, < 2.3.5Patched in:
github.com/containerd/containerd/v2 2.0.12github.com/containerd/containerd 1.7.35github.com/containerd/containerd/v2 2.2.8github.com/containerd/containerd/v2 2.3.5Source: https://osv.dev/vulnerability/GHSA-7jxh-36q5-gcqv
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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