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Medium

Security advisory

Type: advisorySources: OSVCVE: CVE-2022-3586

A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the sch_sfb enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed) into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of service.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2022-3586
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 01:26 UTC · Revision 1

Source evidence

CVE-2022-3586

core-osv · Original source

Published 19 Oct 2022, 00:00 UTC

A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the sch_sfb enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed) into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of service.

osv:CVE-2022-3586
Complete source record
{
  "id": "eeb5b8cdebb21374d35e0b0797164463c44c4bf8d6496d659410dddaf7bbaeac",
  "url": "https://osv.dev/vulnerability/CVE-2022-3586",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2022-3586",
    "summary": "A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the sch_sfb enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed) into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of service.",
    "evidence": "osv:CVE-2022-3586",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-3586",
      "aliases": [
        "CVE-2022-3586"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/torvalds/linux",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4fe89d07dcc2804c8b562f6c7896a45643d34b2f"
                },
                {
                  "fixed": "9efd23297cca"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "Fixed in kernel v6.0"
                      },
                      {
                        "last_affected": "Fixed in kernel v6.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "9efd23297cca"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "Fixed in kernel v6.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-3586.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.623428926Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-794697.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-831302.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/3xxx/CVE-2022-3586.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-3586",
        "https://www.zerodayinitiative.com/advisories/upcoming/",
        "https://github.com/torvalds/linux/commit/9efd23297cca",
        "https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-416"
        ],
        "cna_assigner": "redhat",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/3xxx/CVE-2022-3586.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-3586",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 499440,
  "published_at": "2022-10-19T00:00:00+00:00"
}