Use-after-free in Linux kernel's netfilter: nf_tables component

{
  "id": "7f09b074e0e5bc34fa222ca594646564ab0f350c9705880eba6be12ae436d385",
  "url": "https://osv.dev/vulnerability/CVE-2023-4015",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Use-after-free in Linux kernel's netfilter: nf_tables component",
    "summary": "A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. On an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used. We recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.",
    "evidence": "osv:CVE-2023-4015",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-4015",
      "aliases": [
        "CVE-2023-4015"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6995e2de6891c724bfeb2db33d7b87775f913ad1"
                },
                {
                  "fixed": "2dde18cd1d8fac735875f2e4987f11817cc0bc2c"
                },
                {
                  "fixed": "0a771f7b266b02d262900c75f1e175c7fe76fec2"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "6.4"
                      },
                      {
                        "fixed": "6.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "0a771f7b266b02d262900c75f1e175c7fe76fec2"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v6.5-rc1",
            "v6.5-rc2",
            "v6.5-rc7",
            "v6.5-rc4",
            "v6.5-rc3",
            "v6.5-rc6",
            "v6.5-rc5",
            "v6.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-4015.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.534018713Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-794697.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-831302.html",
        "https://git.kernel.org",
        "https://kernel.dance/0a771f7b266b02d262900c75f1e175c7fe76fec2",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4015.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-4015",
        "https://www.debian.org/security/2023/dsa-5492",
        "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a771f7b266b02d262900c75f1e175c7fe76fec2"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-416"
        ],
        "cna_assigner": "Google",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4015.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-4015",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507992,
  "published_at": "2023-09-06T13:52:44.724+00:00"
}