CVE-2025-64329: containerd CRI server Host Memory Exhaustion Through Attach Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-m6hq-p25p-ffr2",
  "modified" : "2025-11-07T16:42:55Z",
  "published" : "2025-11-06T23:32:23Z",
  "aliases" : [ "CVE-2025-64329" ],
  "summary" : "containerd CRI server: Host memory exhaustion through Attach goroutine leak",
  "details" : "### Impact\n\nA bug was found in containerd's CRI Attach implementation where a user can exhaust memory on the host due to goroutine leaks. \n\nRepetitive calls of CRI Attach (e.g., [`kubectl attach`](https://kubernetes.io/docs/reference/kubectl/generated/kubectl_attach/)) could increase the memory usage of containerd.\n\n### Patches\n\nThis bug has been fixed in the following containerd versions:\n\n* 2.2.0\n* 2.1.5\n* 2.0.7\n* 1.7.29\n\nUsers should update to these versions to resolve the issue.\n\n### Workarounds\n\nSet up an admission controller to control accesses to `pods/attach` resources.\ne.g., [Validating Admission Policy](https://kubernetes.io/docs/reference/access-authn-authz/validating-admission-policy/).\n\n### Credits\n\nThe containerd project would like to thank @Wheat2018 for responsibly disclosing this issue in accordance with the [containerd security policy](https://github.com/containerd/project/blob/main/SECURITY.md).\n\n### References\n\nhttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-64329\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [containerd](https://github.com/containerd/containerd/issues/new/choose)\n* Email us at [security@containerd.io](mailto:security@containerd.io)\n\nTo report a security issue in containerd:\n\n* [Report a new vulnerability](https://github.com/containerd/containerd/security/advisories/new)",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/containerd/containerd"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.7.29"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/containerd/containerd/v2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.7"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/containerd/containerd/v2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.1.0-beta.0"
      }, {
        "fixed" : "2.1.5"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/containerd/containerd/v2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.2.0-beta.0"
      }, {
        "fixed" : "2.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/containerd/containerd/security/advisories/GHSA-m6hq-p25p-ffr2"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-64329"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/containerd/containerd/commit/083b53cd6f19b5de7717b0ce92c11bdf95e612df"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/containerd/containerd"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-401" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-11-06T23:32:23Z",
    "nvd_published_at" : "2025-11-07T05:16:08Z"
  }
}