CVE-2026-97998 (GCVE-0-2026-97998)
Vulnerability from cvelistv5
Published
2026-09-25 10:23
Modified
2026-10-19 09:12
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: cope with concurrent instance destruction Instances are refcounted. However, only memory release happens on the 1 -> 0 transition; the unlink from hashes can occur with any refcount. Uncooperative userspace can force a situation where a queue is pending for destruction from netlink event while a different socket with same portid processes an UNBIND request. With right timing, this will unhash the instance again: Oops: general protection fault, [..] Call Trace: <TASK> nfulnl_recv_config+0x31a/0xd50 nfnetlink_rcv_msg+0x7c2/0xeb0
References
Impacted products
Vendor Product Version
Linux Linux Version: 0597f2680d666a3bcf101ac0c771ba7e50016bbd
Version: 0597f2680d666a3bcf101ac0c771ba7e50016bbd
Version: 0597f2680d666a3bcf101ac0c771ba7e50016bbd
Version: 0597f2680d666a3bcf101ac0c771ba7e50016bbd
Version: 0597f2680d666a3bcf101ac0c771ba7e50016bbd
Version: 0597f2680d666a3bcf101ac0c771ba7e50016bbd
Version: 0597f2680d666a3bcf101ac0c771ba7e50016bbd
Version: 0597f2680d666a3bcf101ac0c771ba7e50016bbd
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nfnetlink_log.c"
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_log: cope with concurrent instance destruction\n\nInstances are refcounted. However, only memory release happens on the\n1 -\u003e 0 transition; the unlink from hashes can occur with any refcount.\n\nUncooperative userspace can force a situation where a queue is pending\nfor destruction from netlink event while a different socket with same\nportid processes an UNBIND request.\n\nWith right timing, this will unhash the instance again:\n\nOops: general protection fault, [..]\nCall Trace:\n \u003cTASK\u003e\n nfulnl_recv_config+0x31a/0xd50\n nfnetlink_rcv_msg+0x7c2/0xeb0"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:12:05.094Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c5c89beaa628d6ac527c6eb2e01b2b52eb417f59"
        },
        {
          "url": "https://git.kernel.org/stable/c/042465e7d3d3127e21f04e42c1639e2518b98915"
        },
        {
          "url": "https://git.kernel.org/stable/c/291685fc8d2e4cf75ed3a23c810883653f407f46"
        },
        {
          "url": "https://git.kernel.org/stable/c/3161186a2ff81288e9a5f35daf1911153764ecae"
        },
        {
          "url": "https://git.kernel.org/stable/c/0234d7ca0317be0a623300e1693cd794bbfdf8af"
        },
        {
          "url": "https://git.kernel.org/stable/c/1a7a8ac9a9f0ad0d410c901cb6f233833518844c"
        },
        {
          "url": "https://git.kernel.org/stable/c/e2dd0f1f8c4e6334699ea6382e52f6da0c7e45eb"
        },
        {
          "url": "https://git.kernel.org/stable/c/387d744fa7e499d2c3748a4e60e02ebb24e7fb16"
        }
      ],
      "title": "netfilter: nfnetlink_log: cope with concurrent instance destruction",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97998",
    "datePublished": "2026-09-25T10:23:28.074Z",
    "dateReserved": "2026-09-25T10:18:58.209Z",
    "dateUpdated": "2026-10-19T09:12:05.094Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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