`rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input

{
  "id": "d88c9341f6dcb99c321a2a355f59af2549253626d0cc76e204bb7d219c14a18a",
  "url": "https://osv.dev/vulnerability/RUSTSEC-2024-0336",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "`rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input",
    "summary": "If a `close_notify` alert is received during a handshake, `complete_io` does not terminate. Callers which do not call `complete_io` are not affected. `rustls-tokio` and `rustls-ffi` do not call `complete_io` and are not affected. `rustls::Stream` and `rustls::StreamOwned` types use `complete_io` and are affected.",
    "evidence": "osv:RUSTSEC-2024-0336",
    "products": [
      {
        "name": {
          "value": "rustls",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.21.11",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "0.22.4",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "0.23.5",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "RUSTSEC-2024-0336",
      "aliases": [
        "CVE-2024-32650",
        "GHSA-6g7w-8wpp-frhj",
        "RUSTSEC-2024-0336"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0.0.0-0"
                },
                {
                  "fixed": "0.21.11"
                },
                {
                  "introduced": "0.22.0"
                },
                {
                  "fixed": "0.22.4"
                },
                {
                  "introduced": "0.23.0"
                },
                {
                  "fixed": "0.23.5"
                }
              ]
            }
          ],
          "package": {
            "name": "rustls",
            "purl": "pkg:cargo/rustls",
            "ecosystem": "crates.io"
          },
          "database_specific": {
            "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "source": "https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2024-0336.json",
            "categories": [
              "denial-of-service"
            ],
            "informational": null
          },
          "ecosystem_specific": {
            "affects": {
              "os": [],
              "arch": [],
              "functions": [
                "rustls::ConnectionCommon::complete_io"
              ]
            },
            "affected_functions": null
          }
        }
      ],
      "modified": "2026-10-12T18:00:07.054681492Z",
      "provider": "osv",
      "references": [
        "https://crates.io/crates/rustls",
        "https://rustsec.org/advisories/RUSTSEC-2024-0336.html",
        "https://github.com/rustls/rustls/commit/2123576840aa31043a31b0770e6572136fbe0c2d"
      ],
      "provider_metadata": {
        "license": "CC0-1.0"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-32650",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 306372,
  "published_at": "2024-04-19T12:00:00+00:00"
}