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CVE-2022-49139 (GCVE-0-2022-49139)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-05-11 18:53
VLAI
Title
Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt This event is just specified for SCO and eSCO link types. On the reception of a HCI_Synchronous_Connection_Complete for a BDADDR of an existing LE connection, LE link type and a status that triggers the second case of the packet processing a NULL pointer dereference happens, as conn->link is NULL.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:48 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: efc7688b557dd1be10eead7399b315efcb1dbc74 , < 1c1291a84e94f6501644634c97544bb8291e9a1a (git)
Affected: efc7688b557dd1be10eead7399b315efcb1dbc74 , < 0f9db1209f59844839175b5b907d3778cafde93d (git)
Affected: efc7688b557dd1be10eead7399b315efcb1dbc74 , < c1aa0dd52db4ce888be0bd820c3fa918d350ca0b (git)
Affected: efc7688b557dd1be10eead7399b315efcb1dbc74 , < f61c23e73dc653b957781066abfa8105c3fa3f5b (git)
Affected: efc7688b557dd1be10eead7399b315efcb1dbc74 , < 3afee2118132e93e5f6fa636dfde86201a860ab3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.30
Unaffected: 0 , < 2.6.30 (semver)
Unaffected: 5.4.231 , ≤ 5.4.* (semver)
Unaffected: 5.10.167 , ≤ 5.10.* (semver)
Unaffected: 5.15.92 , ≤ 5.15.* (semver)
Unaffected: 5.17.3 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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              "programFiles": [
                "net/bluetooth/hci_event.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "1c1291a84e94f6501644634c97544bb8291e9a1a",
                  "status": "affected",
                  "version": "efc7688b557dd1be10eead7399b315efcb1dbc74",
                  "versionType": "git"
                },
                {
                  "lessThan": "0f9db1209f59844839175b5b907d3778cafde93d",
                  "status": "affected",
                  "version": "efc7688b557dd1be10eead7399b315efcb1dbc74",
                  "versionType": "git"
                },
                {
                  "lessThan": "c1aa0dd52db4ce888be0bd820c3fa918d350ca0b",
                  "status": "affected",
                  "version": "efc7688b557dd1be10eead7399b315efcb1dbc74",
                  "versionType": "git"
                },
                {
                  "lessThan": "f61c23e73dc653b957781066abfa8105c3fa3f5b",
                  "status": "affected",
                  "version": "efc7688b557dd1be10eead7399b315efcb1dbc74",
                  "versionType": "git"
                },
                {
                  "lessThan": "3afee2118132e93e5f6fa636dfde86201a860ab3",
                  "status": "affected",
                  "version": "efc7688b557dd1be10eead7399b315efcb1dbc74",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/bluetooth/hci_event.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "2.6.30"
                },
                {
                  "lessThan": "2.6.30",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.231",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.167",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.92",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.17.*",
                  "status": "unaffected",
                  "version": "5.17.3",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "5.18",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.231",
                      "versionStartIncluding": "2.6.30",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.167",
                      "versionStartIncluding": "2.6.30",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.92",
                      "versionStartIncluding": "2.6.30",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.17.3",
                      "versionStartIncluding": "2.6.30",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.18",
                      "versionStartIncluding": "2.6.30",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: fix null ptr deref on hci_sync_conn_complete_evt\n\nThis event is just specified for SCO and eSCO link types.\nOn the reception of a HCI_Synchronous_Connection_Complete for a BDADDR\nof an existing LE connection, LE link type and a status that triggers the\nsecond case of the packet processing a NULL pointer dereference happens,\nas conn-\u003elink is NULL."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-12-23T13:22:12.056Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/1c1291a84e94f6501644634c97544bb8291e9a1a"
            },
            {
              "url": "https://git.kernel.org/stable/c/0f9db1209f59844839175b5b907d3778cafde93d"
            },
            {
              "url": "https://git.kernel.org/stable/c/c1aa0dd52db4ce888be0bd820c3fa918d350ca0b"
            },
            {
              "url": "https://git.kernel.org/stable/c/f61c23e73dc653b957781066abfa8105c3fa3f5b"
            },
            {
              "url": "https://git.kernel.org/stable/c/3afee2118132e93e5f6fa636dfde86201a860ab3"
            }
          ],
          "title": "Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-49139",
        "datePublished": "2025-02-26T01:55:11.163Z",
        "dateReserved": "2025-02-26T01:49:39.269Z",
        "dateUpdated": "2025-12-23T13:22:12.056Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.