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EUVD-2026-344917

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 07:58

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T07:58:41.839072+00:00",
  "id": "EUVD-2026-344917"
}

CVE-2022-50419 (GCVE-0-2022-50419)

Vulnerability from cvelistv5 – Published: 2025-09-18 16:04 – Updated: 2026-08-05 08:58

Title

Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times device_add shall not be called multiple times as stated in its documentation: 'Do not call this routine or device_register() more than once for any device structure' Syzkaller reports a bug as follows [1]: ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:33! invalid opcode: 0000 [#1] PREEMPT SMP KASAN [...] Call Trace: <TASK> __list_add include/linux/list.h:69 [inline] list_add_tail include/linux/list.h:102 [inline] kobj_kset_join lib/kobject.c:164 [inline] kobject_add_internal+0x18f/0x8f0 lib/kobject.c:214 kobject_add_varg lib/kobject.c:358 [inline] kobject_add+0x150/0x1c0 lib/kobject.c:410 device_add+0x368/0x1e90 drivers/base/core.c:3452 hci_conn_add_sysfs+0x9b/0x1b0 net/bluetooth/hci_sysfs.c:53 hci_le_cis_estabilished_evt+0x57c/0xae0 net/bluetooth/hci_event.c:6799 hci_le_meta_evt+0x2b8/0x510 net/bluetooth/hci_event.c:7110 hci_event_func net/bluetooth/hci_event.c:7440 [inline] hci_event_packet+0x63d/0xfd0 net/bluetooth/hci_event.c:7495 hci_rx_work+0xae7/0x1230 net/bluetooth/hci_core.c:4007 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK>

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-14 19:11 UTC

CWE

CWE-415 - Double Free

Assigner

Linux mitre root Scorecard

References

9 references

URL	Tags
https://git.kernel.org/stable/c/4bcefec3636208b4c…
https://git.kernel.org/stable/c/6144423712d570247…
https://git.kernel.org/stable/c/671fee73e08ff415d…
https://git.kernel.org/stable/c/6e85d2ad958c6f034…
https://git.kernel.org/stable/c/7b674dce4162bb46d…
https://git.kernel.org/stable/c/3423a50fa018e88ae…
https://git.kernel.org/stable/c/ef055094df4c10b73…
https://git.kernel.org/stable/c/1b6c89571f4531012…
https://git.kernel.org/stable/c/448a496f760664d3e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b219e3ac66183fc9771b94af931fb5fd41d586ec , < 4bcefec3636208b4c97536b26014d5935d5c10a0 (git) Affected: b219e3ac66183fc9771b94af931fb5fd41d586ec , < 6144423712d570247b8ca26e50a277c30dd13702 (git) Affected: b219e3ac66183fc9771b94af931fb5fd41d586ec , < 671fee73e08ff415d36a7c16bdf238927df83884 (git) Affected: b219e3ac66183fc9771b94af931fb5fd41d586ec , < 6e85d2ad958c6f034b1b158d904019869dbb3c81 (git) Affected: b219e3ac66183fc9771b94af931fb5fd41d586ec , < 7b674dce4162bb46d396586e30e4653427023875 (git) Affected: b219e3ac66183fc9771b94af931fb5fd41d586ec , < 3423a50fa018e88aed4c900d59c3c8334d8ad583 (git) Affected: b219e3ac66183fc9771b94af931fb5fd41d586ec , < ef055094df4c10b73cfe67c8d43f9de1fb608a8b (git) Affected: b219e3ac66183fc9771b94af931fb5fd41d586ec , < 1b6c89571f453101251201f0fad1c26f7256e937 (git) Affected: b219e3ac66183fc9771b94af931fb5fd41d586ec , < 448a496f760664d3e2e79466aa1787e6abc922b5 (git)
Linux	Linux	Affected: 2.6.19 Unaffected: 0 , < 2.6.19 (semver) Unaffected: 4.9.331 , ≤ 4.9.* (semver) Unaffected: 4.14.296 , ≤ 4.14.* (semver) Unaffected: 4.19.262 , ≤ 4.19.* (semver) Unaffected: 5.4.220 , ≤ 5.4.* (semver) Unaffected: 5.10.150 , ≤ 5.10.* (semver) Unaffected: 5.15.75 , ≤ 5.15.* (semver) Unaffected: 5.19.17 , ≤ 5.19.* (semver) Unaffected: 6.0.3 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-50419",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T19:11:20.804878Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-415",
                "description": "CWE-415 Double Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T19:13:10.240Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4bcefec3636208b4c97536b26014d5935d5c10a0",
              "status": "affected",
              "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec",
              "versionType": "git"
            },
            {
              "lessThan": "6144423712d570247b8ca26e50a277c30dd13702",
              "status": "affected",
              "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec",
              "versionType": "git"
            },
            {
              "lessThan": "671fee73e08ff415d36a7c16bdf238927df83884",
              "status": "affected",
              "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec",
              "versionType": "git"
            },
            {
              "lessThan": "6e85d2ad958c6f034b1b158d904019869dbb3c81",
              "status": "affected",
              "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec",
              "versionType": "git"
            },
            {
              "lessThan": "7b674dce4162bb46d396586e30e4653427023875",
              "status": "affected",
              "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec",
              "versionType": "git"
            },
            {
              "lessThan": "3423a50fa018e88aed4c900d59c3c8334d8ad583",
              "status": "affected",
              "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec",
              "versionType": "git"
            },
            {
              "lessThan": "ef055094df4c10b73cfe67c8d43f9de1fb608a8b",
              "status": "affected",
              "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec",
              "versionType": "git"
            },
            {
              "lessThan": "1b6c89571f453101251201f0fad1c26f7256e937",
              "status": "affected",
              "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec",
              "versionType": "git"
            },
            {
              "lessThan": "448a496f760664d3e2e79466aa1787e6abc922b5",
              "status": "affected",
              "version": "b219e3ac66183fc9771b94af931fb5fd41d586ec",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.19"
            },
            {
              "lessThan": "2.6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.331",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.296",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.262",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.220",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.150",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.331",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.296",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.262",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.220",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.150",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.75",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.17",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.3",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "2.6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sysfs: Fix attempting to call device_add multiple times\n\ndevice_add shall not be called multiple times as stated in its\ndocumentation:\n\n \u0027Do not call this routine or device_register() more than once for\n any device structure\u0027\n\nSyzkaller reports a bug as follows [1]:\n------------[ cut here ]------------\nkernel BUG at lib/list_debug.c:33!\ninvalid opcode: 0000 [#1] PREEMPT SMP KASAN\n[...]\nCall Trace:\n \u003cTASK\u003e\n __list_add include/linux/list.h:69 [inline]\n list_add_tail include/linux/list.h:102 [inline]\n kobj_kset_join lib/kobject.c:164 [inline]\n kobject_add_internal+0x18f/0x8f0 lib/kobject.c:214\n kobject_add_varg lib/kobject.c:358 [inline]\n kobject_add+0x150/0x1c0 lib/kobject.c:410\n device_add+0x368/0x1e90 drivers/base/core.c:3452\n hci_conn_add_sysfs+0x9b/0x1b0 net/bluetooth/hci_sysfs.c:53\n hci_le_cis_estabilished_evt+0x57c/0xae0 net/bluetooth/hci_event.c:6799\n hci_le_meta_evt+0x2b8/0x510 net/bluetooth/hci_event.c:7110\n hci_event_func net/bluetooth/hci_event.c:7440 [inline]\n hci_event_packet+0x63d/0xfd0 net/bluetooth/hci_event.c:7495\n hci_rx_work+0xae7/0x1230 net/bluetooth/hci_core.c:4007\n process_one_work+0x991/0x1610 kernel/workqueue.c:2289\n worker_thread+0x665/0x1080 kernel/workqueue.c:2436\n kthread+0x2e4/0x3a0 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306\n \u003c/TASK\u003e"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The vulnerable path is Bluetooth HCI event handling (hci_le_cis_estabilished_evt \u2192 hci_conn_add_sysfs) reached when establishing LE Audio/CIS or related links with a nearby Bluetooth peer/controller, so exploitation requires adjacency rather than local shell or routable network access.\nAC:L - An attacker who can drive the HCI event sequence (malicious/buggy controller, or duplicate CIS Established / handle-colliding events) triggers the double device_add reliably; no race or attacker-uncontrollable timing is required.\nPR:N - A nearby Bluetooth peer needs no account or capability on the victim host; connection acceptance is performed by the victim\u2019s normal Bluetooth/LE Audio stack, not by attacker-held OS privileges.\nUI:N - Once Bluetooth is enabled and reachable for CIS/LE connections (common on phones and audio devices), the kernel processes the HCI events asynchronously without further victim action.\nS:U - Impact stays within the host kernel Bluetooth/driver-model authority; this is not a VM escape, IOMMU bypass, or other cross-scope boundary violation.\nC:H - Double device_add corrupts the kobject kset linked list; without list-debug BUG paths this is kernel memory corruption that can be leveraged for arbitrary read primitives, so confidentiality is High.\nI:H - The same list corruption yields classic unlink/write primitives against kernel list pointers, enabling integrity compromise and potential code execution under the required higher-severity rule.\nA:H - With list debugging the double add hits a kernel BUG/oops; without it, corrupted kset lists still cause crashes or hangs when devices are walked or removed, so availability is High."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:58:43.597Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4bcefec3636208b4c97536b26014d5935d5c10a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/6144423712d570247b8ca26e50a277c30dd13702"
        },
        {
          "url": "https://git.kernel.org/stable/c/671fee73e08ff415d36a7c16bdf238927df83884"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e85d2ad958c6f034b1b158d904019869dbb3c81"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b674dce4162bb46d396586e30e4653427023875"
        },
        {
          "url": "https://git.kernel.org/stable/c/3423a50fa018e88aed4c900d59c3c8334d8ad583"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef055094df4c10b73cfe67c8d43f9de1fb608a8b"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b6c89571f453101251201f0fad1c26f7256e937"
        },
        {
          "url": "https://git.kernel.org/stable/c/448a496f760664d3e2e79466aa1787e6abc922b5"
        }
      ],
      "title": "Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50419",
    "datePublished": "2025-09-18T16:04:02.152Z",
    "dateReserved": "2025-09-17T14:53:07.003Z",
    "dateUpdated": "2026-08-05T08:58:43.597Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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EUVD-2026-344917

CVE-2022-50419 (GCVE-0-2022-50419)

Tags

Sightings

Nomenclature

Related by attack behaviour