{
  "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": "08704ec6d4bf69725e7815b09a9b5c7af83e255b",
              "status": "affected",
              "version": "6e65a09f927566f257322358d429b267548473eb",
              "versionType": "git"
            },
            {
              "lessThan": "39ab048cce70d50af48015f5f294c4cf80d6ba89",
              "status": "affected",
              "version": "6e65a09f927566f257322358d429b267548473eb",
              "versionType": "git"
            },
            {
              "lessThan": "2669567615215d52fb306053cbcc1f53dc386158",
              "status": "affected",
              "version": "6e65a09f927566f257322358d429b267548473eb",
              "versionType": "git"
            },
            {
              "lessThan": "baa53af641c9e3644e717b8dfd1b95a55a0c111b",
              "status": "affected",
              "version": "6e65a09f927566f257322358d429b267548473eb",
              "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": "6.18.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.11",
              "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": "6.18.57",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.11",
                  "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 TX descriptor bounds check\n\nbtintel_pcie_prepare_tx() uses tfd_index to access the TFD and data\nbuffer arrays before the index is advanced modulo txq-\u003ecount. An index\nequal to txq-\u003ecount is one past the end of both arrays, so reject it in\nthe bounds check."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - An adjacent BR/EDR peer\u0027s L2CAP Echo Request enters via btintel_pcie_msix_rx_handle() and l2cap_bredr_sig_cmd(), which echoes peer bytes through hci_send_frame() -\u003e btintel_pcie_send_frame() -\u003e patched btintel_pcie_send_sync(). Bluetooth radio range makes this AV:A.\nAC:H - The peer cannot create tfd_index==32: btintel_pcie_alloc() zeroes tr_hia, the ordered HCI workqueue serializes sends, btintel_pcie_send_sync() advances it modulo txq-\u003ecount, and resets only zero it. Reaching 32 therefore needs corruption or a fault outside attacker control.\nPR:N - l2cap_bredr_sig_cmd() handles L2CAP_ECHO_REQ by directly queuing L2CAP_ECHO_RSP; that branch has no pairing, authentication, or capability gate, so the adjacent peer needs no target privileges.\nUI:N - No user action occurs in this path; after the bad head-index state exists, receipt of L2CAP_ECHO_REQ automatically builds and transmits the response into btintel_pcie_send_sync().\nS:U - btintel_pcie_prepare_tx() corrupts the host kernel\u0027s TX descriptors or memory reached through the post-array data pointer; it does not cross a VM, IOMMU, or other security authority.\nC:H - At index 32, btintel_pcie_prepare_tx() reads bufs[32].data beyond the heap array and writes peer-controlled Echo Response bytes through that pointer; this kernel memory corruption can enable control-flow hijack and disclosure.\nI:H - btintel_pcie_prepare_tx() zeroes and fills tfds[32] past the 32-entry descriptor array, then memcpy() writes through the out-of-bounds bufs[32].data pointer, providing exploitable kernel-memory modification.\nA:H - The invalid bufs[32].data pointer can fault the kernel in memcpy(), while the tfds[32] write corrupts the adjacent URBD0 completion-descriptor area and can stop the Bluetooth transport."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-31T12:42:42.980Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/08704ec6d4bf69725e7815b09a9b5c7af83e255b"
        },
        {
          "url": "https://git.kernel.org/stable/c/39ab048cce70d50af48015f5f294c4cf80d6ba89"
        },
        {
          "url": "https://git.kernel.org/stable/c/2669567615215d52fb306053cbcc1f53dc386158"
        },
        {
          "url": "https://git.kernel.org/stable/c/baa53af641c9e3644e717b8dfd1b95a55a0c111b"
        }
      ],
      "title": "Bluetooth: btintel_pcie: fix TX descriptor bounds check",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99094",
    "datePublished": "2026-10-26T14:52:02.053Z",
    "dateReserved": "2026-09-25T10:25:14.390Z",
    "dateUpdated": "2026-10-31T12:42:42.980Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}