{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2024-56655",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-56655",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-12-27T15:06:19.033Z",
    "updatedAt": "2026-08-05T11:45:53.066Z",
    "importedAt": "2026-10-24T01:57:20.494Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "netfilter: nf_tables: do not defer rule destruction via call_rcu",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: do not defer rule destruction via call_rcu\n\nnf_tables_chain_destroy can sleep, it can't be used from call_rcu\ncallbacks.\n\nMoreover, nf_tables_rule_release() is only safe for error unwinding,\nwhile transaction mutex is held and the to-be-desroyed rule was not\nexposed to either dataplane or dumps, as it deactives+frees without\nthe required synchronize_rcu() in-between.\n\nnft_rule_expr_deactivate() callbacks will change ->use counters\nof other chains/sets, see e.g. nft_lookup .deactivate callback, these\nmust be serialized via transaction mutex.\n\nAlso add a few lockdep asserts to make this more explicit.\n\nCalling synchronize_rcu() isn't ideal, but fixing this without is hard\nand way more intrusive.  As-is, we can get:\n\nWARNING: .. net/netfilter/nf_tables_api.c:5515 nft_set_destroy+0x..\nWorkqueue: events nf_tables_trans_destroy_work\nRIP: 0010:nft_set_destroy+0x3fe/0x5c0\nCall Trace:\n <TASK>\n nf_tables_trans_destroy_work+0x6b7/0xad0\n process_one_work+0x64a/0xce0\n worker_thread+0x613/0x10d0\n\nIn case the synchronize_rcu becomes an issue, we can explore alternatives.\n\nOne way would be to allocate nft_trans_rule objects + one nft_trans_chain\nobject, deactivate the rules + the chain and then defer the freeing to the\nnft destroy workqueue.  We'd still need to keep the synchronize_rcu path as\na fallback to handle -ENOMEM corner cases though.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "9eee6097ffb26cdd2adb988c0d378fa0d650c737",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5146c27b2780aac59876a887a5f4e793b8949862"
            },
            {
              "version": "558f503f707f481bbf40efa74a938b8021df841d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2991dc357a28b61c13ed1f7b59e9251e2b4562fb"
            },
            {
              "version": "a394c160d57f4b083bd904a22802f6fb7f5b3cea",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b8d8f53e1858178882b881b8c09f94ef0e83bf76"
            },
            {
              "version": "e6c32a64d61184c2bdf89442b3d31ef530afba34",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b0f013bebf94fe7ae75e5a53be2f2bd1cc1841e3"
            },
            {
              "version": "bfd05c68e4c6320304e9f371ffa356b6e4b9cc53",
              "status": "affected",
              "versionType": "git",
              "lessThan": "27f0574253f6c24c8ee4e3f0a685b75ed3a256ed"
            },
            {
              "version": "c03d278fdf35e73dd0ec543b9b556876b9d9a8dc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7cf0bd232b565d9852cb25fd094f77254773e048"
            },
            {
              "version": "c03d278fdf35e73dd0ec543b9b556876b9d9a8dc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b04df3da1b5c6f6dc7cdccc37941740c078c4043"
            },
            {
              "version": "cb401e5799e0acacb405f2128097e9c4ccf82f8a",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "6.6.61",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.67"
            },
            {
              "version": "6.11.8",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.12"
            },
            {
              "version": "6.6.67",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}