CVE-2026-98731 (GCVE-0-2026-98731)
Vulnerability from cvelistv5
Published
2026-10-18 15:47
Modified
2026-10-19 09:24
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame() plen is u16 and computed as HDR_SIZE + dlen. For ACL/ISO frames dlen is a 16-bit field, so a value >= 0xFFFC wraps the sum, bypassing the "skb->len < plen" check and letting skb_trim() truncate the packet. Widen plen to u32 so the addition cannot wrap.
References
Impacted products
Vendor Product Version
Linux Linux Version: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e
Version: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e
Version: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e
Version: c2b636b3f788d10486a6691ad6dd3ec4c93bd78e
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/bluetooth/btintel_pcie.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c3a3842c109ac130c6db3aa0014cc8cd344928ad",
              "status": "affected",
              "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e",
              "versionType": "git"
            },
            {
              "lessThan": "c3b5e6da4ba6485bffda9753d8339c28855207aa",
              "status": "affected",
              "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e",
              "versionType": "git"
            },
            {
              "lessThan": "b2cb5ea1dc8cf829816370fc1399e6a1d2d1bca9",
              "status": "affected",
              "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e",
              "versionType": "git"
            },
            {
              "lessThan": "7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea",
              "status": "affected",
              "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/bluetooth/btintel_pcie.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.113",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.56",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.10",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame()\n\nplen is u16 and computed as HDR_SIZE + dlen. For ACL/ISO frames dlen\nis a 16-bit field, so a value \u003e= 0xFFFC wraps the sum, bypassing the\n\"skb-\u003elen \u003c plen\" check and letting skb_trim() truncate the packet.\n\nWiden plen to u32 so the addition cannot wrap."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:24:41.766Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c3a3842c109ac130c6db3aa0014cc8cd344928ad"
        },
        {
          "url": "https://git.kernel.org/stable/c/c3b5e6da4ba6485bffda9753d8339c28855207aa"
        },
        {
          "url": "https://git.kernel.org/stable/c/b2cb5ea1dc8cf829816370fc1399e6a1d2d1bca9"
        },
        {
          "url": "https://git.kernel.org/stable/c/7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea"
        }
      ],
      "title": "Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98731",
    "datePublished": "2026-10-18T15:47:08.399Z",
    "dateReserved": "2026-09-25T10:25:14.367Z",
    "dateUpdated": "2026-10-19T09:24:41.766Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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