{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_core.c",
            "net/bluetooth/hci_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f01cbddfb4273fcc9a786d13b0a2525029023605",
              "status": "affected",
              "version": "de3c85d321bfb85b7742a6cfab95d680da3e26b1",
              "versionType": "git"
            },
            {
              "lessThan": "119ba8070b3f112dd36c897f4f70ea5bb7d370b8",
              "status": "affected",
              "version": "22cbf4f84c00da64196eb15034feee868e63eef0",
              "versionType": "git"
            },
            {
              "lessThan": "7db33b36213a3a1a40940c009ddac30670b55922",
              "status": "affected",
              "version": "22cbf4f84c00da64196eb15034feee868e63eef0",
              "versionType": "git"
            },
            {
              "lessThan": "762850c203fab1190ad6a3de41cd51920b22236d",
              "status": "affected",
              "version": "22cbf4f84c00da64196eb15034feee868e63eef0",
              "versionType": "git"
            },
            {
              "lessThan": "9af12272061d206af8bc3e40215cb694421ab73a",
              "status": "affected",
              "version": "22cbf4f84c00da64196eb15034feee868e63eef0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7a54f8314584f78fb0557153b1059924249ef628",
              "versionType": "git"
            },
            {
              "lessThan": "6.6.160",
              "status": "affected",
              "version": "6.6.28",
              "versionType": "semver"
            },
            {
              "lessThan": "6.9",
              "status": "affected",
              "version": "6.8.7",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_core.c",
            "net/bluetooth/hci_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "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": "6.6.160",
                  "versionStartIncluding": "6.6.28",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.114",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.57",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.11",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.8.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: Fix command skb lifetime during scan setup\n\nDuring PA sync scan setup, hci_le_set_ext_scan_param_sync() gets the\naddress used for the PA_LINK lookup from hci_sent_cmd_data(). The\nreturned pointer borrows storage from sent_cmd or req_skb, without\nholding a reference to either skb.\n\nThe scan worker runs on req_workqueue while hci_cmd_work() runs on the\nseparate device workqueue. After the scan worker loads sent_cmd, the\ncommand worker can free and replace it before hci_sent_cmd_data()\ndereferences the skb. The command payload can also be freed between\nreturning from the helper and comparing the address. The connection\nlookup\u0027s RCU critical section does not protect the command skb.\n\nKASAN reported:\n\n  BUG: KASAN: slab-use-after-free in hci_sent_cmd_data+0x27c/0x2f0\n  Workqueue: hci0 hci_cmd_sync_work\n  Call Trace:\n   hci_sent_cmd_data+0x27c/0x2f0\n   hci_le_set_scan_param_sync+0x43a/0x850\n   hci_passive_scan_sync+0xb09/0x1460\n   hci_update_passive_scan_sync+0x47c/0x6e0\n   hci_le_pa_create_sync+0x200/0xa70\n   hci_cmd_sync_work+0x13c/0x290\n\n  Allocated by task 95:\n   skb_clone+0x13f/0x340\n   hci_cmd_work+0x2a9/0x7e0\n\n  Freed by task 95:\n   kmem_cache_free+0xba/0x3a0\n   hci_cmd_work+0x29c/0x7e0\n\nUse hdev-\u003elock to serialize the address snapshot with sent_cmd\nreplacement. Protect req_skb replacement and completion cleanup with\nthe same lock because the helper falls back to that skb. Copy the\naddress before releasing the lock and use the copy for the existing\nRCU-protected connection lookup. Release the mutex before sending or\nwaiting for commands, preserving the lookup and completion ordering."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - A local listen(2) on a broadcast BTPROTO_ISO socket reaches iso_sock_listen() \u2192 iso_listen_bis() \u2192 hci_pa_create_sync() \u2192 hci_le_pa_create_sync() \u2192 hci_le_set_ext_scan_param_sync(). No received Bluetooth PDU initiates this PA-sync setup.\nAC:L - The attacker can run the ISO listen while flooding security-filter-permitted HCI_OP_READ_LOCAL_VERSION commands through a raw HCI socket; hci_sock_sendmsg() queues them on hdev-\u003ecmd_q, making hci_cmd_work() race hci_sent_cmd_data() on the separate req_workqueue.\nPR:L - iso_sock_create(), bind(), and listen() have no capability check, while an unprivileged raw HCI socket may submit HCI_OP_READ_LOCAL_VERSION because OGF_INFO_PARAM/OCF 1 is in hci_sec_filter. Bluetooth sockets require init_net, but an ordinary host user satisfies that condition.\nUI:N - The attacking process itself binds and listens on the broadcast ISO socket and submits the racing raw HCI commands; no separate victim action is needed once ISO sockets and the adapter are enabled.\nS:U - The stale sent_cmd or req_skb and resulting memory access remain within the host kernel\u0027s Bluetooth authority; hci_le_set_ext_scan_param_sync() crosses no VM, IOMMU, or other security boundary.\nC:H - hci_cmd_data() dereferences len and data from a freed sk_buff, and the returned command-payload pointer can itself be freed before the six-byte bdaddr read. Reclaiming the sprayable skbuff_head_cache object therefore supplies an attacker-directed stale-pointer read primitive.\nI:H - A reclaimed command sk_buff controls the stale len/data fields and the bdaddr used to select a PA_LINK, whose iso_qos then determines the HCI_OP_LE_SET_EXT_SCAN_PARAMS command. This sprayable kernel use-after-free is an integrity-high memory-corruption primitive.\nA:H - KASAN confirmed a slab-use-after-free in hci_sent_cmd_data(); dereferencing the freed sk_buff or its released payload can fault in hci_cmd_sync_work and cause a kernel oops or panic."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-24T14:10:02.640Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f01cbddfb4273fcc9a786d13b0a2525029023605"
        },
        {
          "url": "https://git.kernel.org/stable/c/119ba8070b3f112dd36c897f4f70ea5bb7d370b8"
        },
        {
          "url": "https://git.kernel.org/stable/c/7db33b36213a3a1a40940c009ddac30670b55922"
        },
        {
          "url": "https://git.kernel.org/stable/c/762850c203fab1190ad6a3de41cd51920b22236d"
        },
        {
          "url": "https://git.kernel.org/stable/c/9af12272061d206af8bc3e40215cb694421ab73a"
        }
      ],
      "title": "Bluetooth: hci_sync: Fix command skb lifetime during scan setup",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99014",
    "datePublished": "2026-10-23T12:20:39.617Z",
    "dateReserved": "2026-09-25T10:25:14.385Z",
    "dateUpdated": "2026-10-24T14:10:02.640Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}