CVE-2026-97601 (GCVE-0-2026-97601)
Vulnerability from cvelistv5
Published
2026-09-25 10:22
Modified
2026-10-19 09:10
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ieee802154: 6lowpan: fix NULL dereference in lowpan_newlink TUNSETLINK allows a TUN device to change its link-layer type to ARPHRD_IEEE802154 without initializing ieee802154_ptr. lowpan_newlink() checks only the device type before dereferencing the pointer, so an RTM_NEWLINK request can trigger a NULL pointer dereference. Reject devices without ieee802154_ptr along with devices of the wrong type.
References
Impacted products
Vendor Product Version
Linux Linux Version: 51e0e5d8124ece158927a4c2288c0929d3b53aa3
Version: 51e0e5d8124ece158927a4c2288c0929d3b53aa3
Version: 51e0e5d8124ece158927a4c2288c0929d3b53aa3
Version: 51e0e5d8124ece158927a4c2288c0929d3b53aa3
Version: 51e0e5d8124ece158927a4c2288c0929d3b53aa3
Version: 51e0e5d8124ece158927a4c2288c0929d3b53aa3
Version: 51e0e5d8124ece158927a4c2288c0929d3b53aa3
Version: 51e0e5d8124ece158927a4c2288c0929d3b53aa3
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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ieee802154/6lowpan/core.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.3"
            },
            {
              "lessThan": "4.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
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              "version": "6.18.53",
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              "version": "7.2.7",
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            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: 6lowpan: fix NULL dereference in lowpan_newlink\n\nTUNSETLINK allows a TUN device to change its link-layer type to\nARPHRD_IEEE802154 without initializing ieee802154_ptr. lowpan_newlink()\nchecks only the device type before dereferencing the pointer, so an\nRTM_NEWLINK request can trigger a NULL pointer dereference.\n\nReject devices without ieee802154_ptr along with devices of the wrong type."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:10:04.903Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a1760f21c32adce41af5ed5687200865d8feaaeb"
        },
        {
          "url": "https://git.kernel.org/stable/c/5063b9354e6e285dae61e530b30458498444a914"
        },
        {
          "url": "https://git.kernel.org/stable/c/16d8e0b560d50cd1a9e6d77a9a154a94c4d6021e"
        },
        {
          "url": "https://git.kernel.org/stable/c/543994fa03c36a91d967a12c5c99cae74899504c"
        },
        {
          "url": "https://git.kernel.org/stable/c/1c7710af7ad9532b534f1c134c11b04dbe4e0e0f"
        },
        {
          "url": "https://git.kernel.org/stable/c/98ce5a42cde780ee0e40378607d4428c8fc12ec1"
        },
        {
          "url": "https://git.kernel.org/stable/c/8528da2333ce05cf627f93425f9d05efb08b3146"
        },
        {
          "url": "https://git.kernel.org/stable/c/bf79662bc85e820ac3b846e2f347da29fbf6ac95"
        }
      ],
      "title": "ieee802154: 6lowpan: fix NULL dereference in lowpan_newlink",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97601",
    "datePublished": "2026-09-25T10:22:14.792Z",
    "dateReserved": "2026-09-24T16:01:01.158Z",
    "dateUpdated": "2026-10-19T09:10:04.903Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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