ghsa-66vv-cf65-88qw
Vulnerability from github
Published
2024-07-12 15:31
Modified
2025-11-04 00:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

netfilter: ipset: Fix suspicious rcu_dereference_protected()

When destroying all sets, we are either in pernet exit phase or are executing a "destroy all sets command" from userspace. The latter was taken into account in ip_set_dereference() (nfnetlink mutex is held), but the former was not. The patch adds the required check to rcu_dereference_protected() in ip_set_dereference().

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{
  "affected": [],
  "aliases": [
    "CVE-2024-40993"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-12T13:15:20Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: Fix suspicious rcu_dereference_protected()\n\nWhen destroying all sets, we are either in pernet exit phase or\nare executing a \"destroy all sets command\" from userspace. The latter\nwas taken into account in ip_set_dereference() (nfnetlink mutex is held),\nbut the former was not. The patch adds the required check to\nrcu_dereference_protected() in ip_set_dereference().",
  "id": "GHSA-66vv-cf65-88qw",
  "modified": "2025-11-04T00:30:57Z",
  "published": "2024-07-12T15:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-40993"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3799d02ae4208af08e81310770d8754863a246a1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3fc09e1ca854bc234e007a56e0f7431f5e2defb5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/523bed6489e089dd8040e72453fb79da47b144c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72d9611968867cc4c5509e7708b1507d692b797a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/788d585e62f487bc4536d454937f737b70d39a33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ecd06277a7664f4ef018abae3abd3451d64e7a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94dd411c18d7fff9e411555d5c662d29416501e4"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.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"
    }
  ]
}


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