GHSA-P9M5-3HJ7-CP5R

Vulnerability from github – Published: 2022-05-24 17:37 – Updated: 2023-06-13 17:24
VLAI?
Summary
futures_task::noop_waker_ref can segfault due to dereferencing a NULL pointer
Details

Affected versions of the crate used a UnsafeCell in thread-local storage to return a noop waker reference, assuming that the reference would never be returned from another thread.

This resulted in a segmentation fault crash if Waker::wake_by_ref() was called on a waker returned from another thread due to it attempting to dereference a pointer that wasn't accessible from the main thread.

Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "futures-task"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-35907"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-16T23:58:57Z",
    "nvd_published_at": "2020-12-31T09:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Affected versions of the crate used a UnsafeCell in thread-local storage to return a noop waker reference, assuming that the reference would never be returned from another thread.\n\nThis resulted in a segmentation fault crash if Waker::wake_by_ref() was called on a waker returned from another thread due to it attempting to dereference a pointer that wasn\u0027t accessible from the main thread.",
  "id": "GHSA-p9m5-3hj7-cp5r",
  "modified": "2023-06-13T17:24:56Z",
  "published": "2022-05-24T17:37:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-35907"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-lang/futures-rs/issues/2091"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rust-lang/futures-rs"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0061.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "futures_task::noop_waker_ref can segfault due to dereferencing a NULL pointer"
}


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