{
  "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-2022-48976",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-48976",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2024-10-21T20:05:55.739Z",
    "updatedAt": "2026-05-23T15:21:14.168Z",
    "importedAt": "2026-10-24T01:56:45.230Z",
    "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: flowtable_offload: fix using __this_cpu_add in preemptible",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: flowtable_offload: fix using __this_cpu_add in preemptible\n\nflow_offload_queue_work() can be called in workqueue without\nbh disabled, like the call trace showed in my act_ct testing,\ncalling NF_FLOW_TABLE_STAT_INC() there would cause a call\ntrace:\n\n  BUG: using __this_cpu_add() in preemptible [00000000] code: kworker/u4:0/138560\n  caller is flow_offload_queue_work+0xec/0x1b0 [nf_flow_table]\n  Workqueue: act_ct_workqueue tcf_ct_flow_table_cleanup_work [act_ct]\n  Call Trace:\n   <TASK>\n   dump_stack_lvl+0x33/0x46\n   check_preemption_disabled+0xc3/0xf0\n   flow_offload_queue_work+0xec/0x1b0 [nf_flow_table]\n   nf_flow_table_iterate+0x138/0x170 [nf_flow_table]\n   nf_flow_table_free+0x140/0x1a0 [nf_flow_table]\n   tcf_ct_flow_table_cleanup_work+0x2f/0x2b0 [act_ct]\n   process_one_work+0x6a3/0x1030\n   worker_thread+0x8a/0xdf0\n\nThis patch fixes it by using NF_FLOW_TABLE_STAT_INC_ATOMIC()\ninstead in flow_offload_queue_work().\n\nNote that for FLOW_CLS_REPLACE branch in flow_offload_queue_work(),\nit may not be called in preemptible path, but it's good to use\nNF_FLOW_TABLE_STAT_INC_ATOMIC() for all cases in\nflow_offload_queue_work().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b038177636f83bbf87c2b238706474145dd2cd04",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a220a11fda012fba506b35929672374c2723ae6d"
            },
            {
              "version": "b038177636f83bbf87c2b238706474145dd2cd04",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a81047154e7ce4eb8769d5d21adcbc9693542a79"
            },
            {
              "version": "5345d78ae64d5a760c211cd2da995dc71c5b29e4",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.15.157",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.16"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.0"
            },
            {
              "version": "6.0.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "version": "6.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}