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Medium

rust openssl ssl::select_next_proto use after free

Type: advisorySources: OSV

rust-openssl is a set of OpenSSL bindings for the Rust programming language. In affected versions `ssl::select_next_proto` can return a slice pointing into the `server` argument's buffer but with a lifetime bound to the `client` argument. In situations where the `sever` buffer's lifetime is shorter than the `client` buffer's, this can cause a use after free. This could cause the server to crash or to return arbitrary memory contents to the client. The crate`openssl` version 0.10.70 fixes the signature of `ssl::select_next_proto` to properly constrain the output buffer's lifetime to that of both input buffers. Users are advised to upgrade. In standard usage of `ssl::select_next_proto` in the callback passed to `SslContextBuilder::set_alpn_select_callback`, code is only affected if the `server` buffer is constructed *within* the callback.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-24898
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 01:07 UTC · Revision 1

Source evidence

rust openssl ssl::select_next_proto use after free

core-osv · Original source

Published 3 Feb 2025, 17:57 UTC

rust-openssl is a set of OpenSSL bindings for the Rust programming language. In affected versions `ssl::select_next_proto` can return a slice pointing into the `server` argument's buffer but with a lifetime bound to the `client` argument. In situations where the `sever` buffer's lifetime is shorter than the `client` buffer's, this can cause a use after free. This could cause the server to crash or to return arbitrary memory contents to the client. The crate`openssl` version 0.10.70 fixes the signature of `ssl::select_next_proto` to properly constrain the output buffer's lifetime to that of both input buffers. Users are advised to upgrade. In standard usage of `ssl::select_next_proto` in the callback passed to `SslContextBuilder::set_alpn_select_callback`, code is only affected if the `server` buffer is constructed *within* the callback.

osv:CVE-2025-24898
Complete source record
{
  "id": "ba55f6b826ad1a6cc5bef6c3ba7525968ff4b4816bbe15d629c41271033ef5a5",
  "url": "https://osv.dev/vulnerability/CVE-2025-24898",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "rust openssl ssl::select_next_proto use after free",
    "summary": "rust-openssl is a set of OpenSSL bindings for the Rust programming language. In affected versions `ssl::select_next_proto` can return a slice pointing into the `server` argument's buffer but with a lifetime bound to the `client` argument. In situations where the `sever` buffer's lifetime is shorter than the `client` buffer's, this can cause a use after free. This could cause the server to crash or to return arbitrary memory contents to the client. The crate`openssl` version 0.10.70 fixes the signature of `ssl::select_next_proto` to properly constrain the output buffer's lifetime to that of both input buffers. Users are advised to upgrade. In standard usage of `ssl::select_next_proto` in the callback passed to `SslContextBuilder::set_alpn_select_callback`, code is only affected if the `server` buffer is constructed *within* the callback.",
    "evidence": "osv:CVE-2025-24898",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-24898",
      "aliases": [
        "CVE-2025-24898",
        "GHSA-rpmj-rpgj-qmpm",
        "RUSTSEC-2025-0004"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/rust-openssl/rust-openssl",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d85e2a293778d2a01d715060e7516a8828b0a5ac"
                },
                {
                  "fixed": "a4d399b0f1a3694cb2d1728edf74d318a3cac890"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.10.0"
                      },
                      {
                        "fixed": "0.10.70"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  }
                ]
              }
            }
          ],
          "versions": [
            "openssl-sys-v0.9.105",
            "openssl-v0.10.69",
            "openssl-v0.10.68",
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            "openssl-sys-v0.9.104",
            "openssl-v0.10.66",
            "openssl-v0.10.65",
            "openssl-sys-v0.9.103",
            "openssl-sys-v0.9.102",
            "openssl-sys-v0.9.101",
            "openssl-v0.10.64",
            "openssl-sys-v0.9.100",
            "openssl-v0.10.63",
            "openssl-sys-v0.9.99",
            "openssl-v0.10.62",
            "openssl-sys-v0.9.98",
            "openssl-v0.10.61",
            "openssl-sys-v0.9.97",
            "openssl-v0.10.60",
            "openssl-sys-v0.9.96",
            "openssl-v0.10.59",
            "openssl-sys-v0.9.95",
            "openssl-v0.10.58",
            "openssl-sys-v0.9.94",
            "openssl-sys-v0.9.93",
            "openssl-v0.10.57",
            "openssl-sys-v0.9.92",
            "openssl-v0.10.56",
            "openssl-sys-v0.9.91",
            "openssl-sys-v0.9.90",
            "openssl-v0.10.55",
            "openssl-sys-v0.9.89",
            "openssl-v0.10.54",
            "openssl-v0.10.53",
            "openssl-sys-v0.9.88",
            "openssl-v0.10.52",
            "openssl-sys-v0.9.87",
            "openssl-v0.10.51",
            "openssl-sys-v0.9.86",
            "openssl-v0.10.50",
            "openssl-sys-v0.9.85",
            "openssl-v0.10.49",
            "openssl-sys-v0.9.84",
            "openssl-macros-v0.1.1",
            "openssl-v0.10.48",
            "openssl-sys-v0.9.83",
            "openssl-v0.10.47",
            "openssl-sys-v0.9.82",
            "openssl-v0.10.46",
            "openssl-sys-v0.9.81",
            "openssl-v0.10.45",
            "openssl-sys-v0.9.80",
            "openssl-v0.10.44",
            "openssl-sys-v0.9.79",
            "openssl-v0.10.43",
            "openssl-sys-v0.9.78",
            "openssl-sys-v0.9.77",
            "openssl-v0.10.42",
            "openssl-sys-v0.9.76",
            "openssl-v0.10.41",
            "openssl-sys-v0.9.75",
            "openssl-sys-v0.9.74",
            "openssl-v0.10.40",
            "openssl-v0.10.39",
            "openssl-macros-v0.1.0",
            "openssl-sys-v0.9.73",
            "openssl-sys-v0.9.72",
            "openssl-sys-v0.9.71",
            "openssl-sys-v0.9.65",
            "openssl-sys-v0.9.70",
            "openssl-v0.10.38",
            "openssl-sys-v0.9.69",
            "openssl-v0.10.37",
            "openssl-sys-v0.9.68",
            "openssl-sys-v0.9.67",
            "openssl-v0.10.36",
            "openssl-sys-v0.9.66",
            "openssl-errors-v0.2.0",
            "openssl-v0.10.35",
            "openssl-sys-v0.9.64",
            "openssl-sys-v0.9.63",
            "openssl-v0.10.34",
            "openssl-sys-v0.9.62",
            "openssl-v0.10.33",
            "openssl-sys-v0.9.61",
            "openssl-v0.10.32",
            "openssl-sys-v0.9.60",
            "openssl-v0.10.31",
            "openssl-sys-v0.9.59",
            "openssl-v0.10.30",
            "openssl-sys-v0.9.58",
            "openssl-sys-v0.9.57",
            "openssl-sys-v0.9.56",
            "openssl-v0.10.29",
            "openssl-sys-v0.9.55",
            "openssl-v0.10.28",
            "openssl-v0.9.27",
            "openssl-v0.10.27",
            "openssl-sys-v0.9.54",
            "openssl-v0.10.26",
            "openssl-sys-v0.9.53",
            "openssl-sys-v0.9.52",
            "openssl-sys-v0.9.51",
            "openssl-v0.10.25",
            "openssl-sys-v0.9.50",
            "openssl-sys-v0.9.49",
            "openssl-v0.10.24",
            "openssl-sys-v0.9.48",
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            "openssl-v0.10.18",
            "openssl-v0.10.17",
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            "openssl-v0.10.16",
            "openssl-sys-v0.9.40",
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            "openssl-sys-v0.9.38",
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            "openssl-v0.10.11",
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            "openssl-v0.10.9",
            "openssl-sys-v0.9.32",
            "openssl-v0.10.8",
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            "openssl-v0.10.7",
            "openssl-sys-v0.9.30",
            "openssl-v0.10.6",
            "openssl-sys-v0.9.28",
            "openssl-v0.10.5",
            "openssl-sys-v0.9.27",
            "openssl-v0.10.4",
            "openssl-sys-v0.9.26",
            "openssl-v0.10.3",
            "openssl-sys-v0.9.25",
            "openssl-v0.10.2",
            "openssl-v0.10.1",
            "openssl-v0.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-24898.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.749601145Z",
      "provider": "osv",
      "references": [
        "https://crates.io/crates/openssl",
        "https://lists.debian.org/debian-lts-announce/2025/02/msg00009.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24898.json",
        "https://github.com/sfackler/rust-openssl/security/advisories/GHSA-rpmj-rpgj-qmpm",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-24898",
        "https://github.com/sfackler/rust-openssl/pull/2360"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-416"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24898.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-24898",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491430,
  "published_at": "2025-02-03T17:57:39.558+00:00"
}