CVE-2026-98602 (GCVE-0-2026-98602)
Vulnerability from cvelistv5
Published
2026-10-18 15:19
Modified
2026-10-19 09:22
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: fix out-of-bounds reads on short RX/TX frames and control fallthrough Fix multiple out-of-bounds reads in Bluetooth BNEP frame processing: 1. In bnep_rx_frame() and bnep_ctrl_frame() (net/bluetooth/bnep/core.c), use pskb_may_pull() to verify the BNEP header, control type byte, filter count, and extension headers exist before reading them, and return 0 after handling BNEP_CONTROL instead of falling through to Ethernet frame submission when no extension headers follow. 2. In bnep_net_xmit() (net/bluetooth/bnep/netdev.c), verify skb->len >= ETH_HLEN with pskb_may_pull() before reading the 14-byte Ethernet header to prevent an out-of-bounds heap read and infoleak on short AF_PACKET TX frames.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/bnep/core.c",
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          "vendor": "Linux",
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          "product": "Linux",
          "programFiles": [
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            "net/bluetooth/bnep/netdev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "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",
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              "status": "unaffected",
              "version": "6.12.112",
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.55",
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              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "vulnerable": true
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                  "versionEndExcluding": "5.15.222",
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                {
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: bnep: fix out-of-bounds reads on short RX/TX frames and control fallthrough\n\nFix multiple out-of-bounds reads in Bluetooth BNEP frame processing:\n\n1. In bnep_rx_frame() and bnep_ctrl_frame() (net/bluetooth/bnep/core.c),\n   use pskb_may_pull() to verify the BNEP header, control type byte,\n   filter count, and extension headers exist before reading them, and\n   return 0 after handling BNEP_CONTROL instead of falling through to\n   Ethernet frame submission when no extension headers follow.\n2. In bnep_net_xmit() (net/bluetooth/bnep/netdev.c), verify skb-\u003elen \u003e=\n   ETH_HLEN with pskb_may_pull() before reading the 14-byte Ethernet\n   header to prevent an out-of-bounds heap read and infoleak on short\n   AF_PACKET TX frames."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:22:29.455Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7af80ad2cebfe2f1879d6a39a1aaa061d9c4e1ca"
        },
        {
          "url": "https://git.kernel.org/stable/c/667aa703e11cdc237d169393bc6a5ea9acbb33c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/3e605ff5932afe0970c2beca66f2f1ba2babe4dd"
        },
        {
          "url": "https://git.kernel.org/stable/c/035f9b1809861967e58ce652680d70ea1502058f"
        },
        {
          "url": "https://git.kernel.org/stable/c/1e7aebc188f889b56c3aaeb6133ef6d77022c887"
        },
        {
          "url": "https://git.kernel.org/stable/c/8f31031326994d1abfcc6ebb6927ef96e51fb9ff"
        },
        {
          "url": "https://git.kernel.org/stable/c/ad0d2d4ada51321db787262ef343193c712b76b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/f0ca020cbb9bb7f3f4ea8ba1dfcf30a282aec91e"
        }
      ],
      "title": "Bluetooth: bnep: fix out-of-bounds reads on short RX/TX frames and control fallthrough",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98602",
    "datePublished": "2026-10-18T15:19:14.606Z",
    "dateReserved": "2026-09-25T10:25:14.359Z",
    "dateUpdated": "2026-10-19T09:22:29.455Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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