{
  "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-2026-97611",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-97611",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-25T10:22:20.827Z",
    "updatedAt": "2026-10-19T09:10:15.022Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "net: openvswitch: fix use-after-free of the flow table mask array",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: openvswitch: fix use-after-free of the flow table mask array\n\ntbl_mask_array_realloc() retires the old mask_array before it stops being\nreachable:\n\n\told = ovsl_dereference(tbl->mask_array);\n\tif (old) {\n\t\t...\n\t\tcall_rcu(&old->rcu, mask_array_rcu_cb);\n\t}\n\n\trcu_assign_pointer(tbl->mask_array, new);\n\ncall_rcu() only waits for read-side critical sections already in flight.\ntbl->mask_array still points at old between the call_rcu() and the\nrcu_assign_pointer(), so a reader entering ovs_flow_tbl_lookup_stats() in\nthat window picks up old in a fresh critical section that the pending\ngrace period does not cover.\n\ntbl_mask_array_realloc() runs in process context under ovs_mutex, so the\nwindow is preemptible and can outlast the grace period. Then\nmask_array_rcu_cb() frees old before the swap runs:\n\n  BUG: KASAN: slab-use-after-free in flow_lookup.constprop.0+0x2bf/0x2f0\n  Read of size 8 at addr ffff888020b3e018 by task poc/741\n   flow_lookup.constprop.0+0x2bf/0x2f0\n   ovs_flow_tbl_lookup_stats+0x4a3/0x5c0\n   ovs_dp_process_packet+0x19c/0x710\n   ovs_vport_receive+0x243/0x390\n   internal_dev_xmit+0x81/0x170\n  Freed by task 728:\n   kfree+0x16a/0x4e0\n   rcu_core+0x853/0x1030\n\nPublish the new array before retiring the old one. The kfree_rcu() that\ncall_rcu() replaced ran after the swap.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "eac87c413bf9794c14d488998a5265ea5b32f04e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4c98b492e9ed63f9ca3e23566d9a6a4f235944f4"
            },
            {
              "version": "eac87c413bf9794c14d488998a5265ea5b32f04e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4016ead17acd75312c066ecd47c4b7f0a81ceaa2"
            },
            {
              "version": "eac87c413bf9794c14d488998a5265ea5b32f04e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "017dbbf0d6c319a487f68e22f56d91fc787d5525"
            },
            {
              "version": "eac87c413bf9794c14d488998a5265ea5b32f04e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "76678217cdabc41e3c74c23b45b62086ffb8fe7a"
            },
            {
              "version": "eac87c413bf9794c14d488998a5265ea5b32f04e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cd982e11684def5d4a9fcfd5354de09032828414"
            },
            {
              "version": "eac87c413bf9794c14d488998a5265ea5b32f04e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a0d18d21d48a551f82ee344e50efb8a682161489"
            },
            {
              "version": "eac87c413bf9794c14d488998a5265ea5b32f04e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "035e9c3722067648a99010711d0ce81f42572ef4"
            },
            {
              "version": "eac87c413bf9794c14d488998a5265ea5b32f04e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ba4ba11ed6eb8972c69070417fc27b48deb002e8"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.9"
            },
            {
              "version": "5.10.271",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.222",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.111",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}