Vulnerability-Lookup

GHSA-3H24-5M24-PXVW

Vulnerability from github – Published: 2024-12-27 15:31 – Updated: 2025-11-03 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc()

bt_sock_alloc() attaches allocated sk object to the provided sock object. If rfcomm_dlc_alloc() fails, we release the sk object, but leave the dangling pointer in the sock object, which may cause use-after-free.

Fix this by swapping calls to bt_sock_alloc() and rfcomm_dlc_alloc().

Severity

7.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2024-56604"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-27T15:15:19Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc()\n\nbt_sock_alloc() attaches allocated sk object to the provided sock object.\nIf rfcomm_dlc_alloc() fails, we release the sk object, but leave the\ndangling pointer in the sock object, which may cause use-after-free.\n\nFix this by swapping calls to bt_sock_alloc() and rfcomm_dlc_alloc().",
  "id": "GHSA-3h24-5m24-pxvw",
  "modified": "2025-11-03T21:31:54Z",
  "published": "2024-12-27T15:31:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56604"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32df687e129ef0f9afcbcc914f7c32deb28fd481"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3945c799f12b8d1f49a3b48369ca494d981ac465"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6021ccc2471b7b95e29b7cfc7938e042bf56e281"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac3eaac4cf142a15fe67be747a682b1416efeb6e"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-56604 (GCVE-0-2024-56604)

Vulnerability from cvelistv5 – Published: 2024-12-27 14:51 – Updated: 2026-08-05 11:45

Title

Bluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc()

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc() bt_sock_alloc() attaches allocated sk object to the provided sock object. If rfcomm_dlc_alloc() fails, we release the sk object, but leave the dangling pointer in the sock object, which may cause use-after-free. Fix this by swapping calls to bt_sock_alloc() and rfcomm_dlc_alloc().

Severity

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 2025-02-11 15:42 UTC

CWE

CWE-416 - Use After Free

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/ac3eaac4cf142a15f…
https://git.kernel.org/stable/c/6021ccc2471b7b95e…
https://git.kernel.org/stable/c/32df687e129ef0f9a…
https://git.kernel.org/stable/c/3945c799f12b8d1f4…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ac3eaac4cf142a15fe67be747a682b1416efeb6e (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6021ccc2471b7b95e29b7cfc7938e042bf56e281 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 32df687e129ef0f9afcbcc914f7c32deb28fd481 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3945c799f12b8d1f49a3b48369ca494d981ac465 (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 6.1.120 , ≤ 6.1.* (semver) Unaffected: 6.6.66 , ≤ 6.6.* (semver) Unaffected: 6.12.5 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "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-2024-56604",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-11T15:42:12.765631Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-11T15:45:23.368Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:50:48.128Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/rfcomm/sock.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ac3eaac4cf142a15fe67be747a682b1416efeb6e",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6021ccc2471b7b95e29b7cfc7938e042bf56e281",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "32df687e129ef0f9afcbcc914f7c32deb28fd481",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "3945c799f12b8d1f49a3b48369ca494d981ac465",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/rfcomm/sock.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.12"
            },
            {
              "lessThan": "2.6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.66",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.120",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.66",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.5",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "2.6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc()\n\nbt_sock_alloc() attaches allocated sk object to the provided sock object.\nIf rfcomm_dlc_alloc() fails, we release the sk object, but leave the\ndangling pointer in the sock object, which may cause use-after-free.\n\nFix this by swapping calls to bt_sock_alloc() and rfcomm_dlc_alloc()."
        }
      ],
      "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 - The dangling `sock-\u003esk` can only be created through `rfcomm_sock_create()`, i.e. a local `socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)` syscall; the remote-peer path `rfcomm_connect_ind()` passes `sock == NULL` and therefore never binds a sk to a socket. Exploitation thus requires local execution rather than Bluetooth-range access.\nAC:L - The attacker controls both sides of the condition \u2014 they can drive the system into memory pressure with their own allocations (GFP_ATOMIC allocations fail readily under pressure) while looping on RFCOMM socket creation until the `rfcomm_dlc_alloc()` kzalloc fails. No memory layout or victim state outside the attacker\u0027s influence is required.\nPR:L - `bt_sock_create()` performs no capability check for BTPROTO_RFCOMM and even autoloads the rfcomm module on demand, so any unprivileged local user can reach `rfcomm_sock_alloc()` without Bluetooth hardware or CAP_NET_ADMIN/CAP_NET_RAW.\nUI:N - The attacker triggers the entire sequence from their own process via the socket() syscall; no action by any other user is needed.\nS:U - The freed `struct sock` and the stale pointer both live in kernel memory within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - A freed `struct sock` (rfcomm_pinfo slab object) remains referenced by the socket, and a use-after-free on that object lets an attacker reclaim the slot with controlled data and read back kernel memory, so per UAF scoring guidance confidentiality impact is High.\nI:H - Use-after-free on a `struct sock` gives heap-spray and write primitives over function-pointer-bearing fields (sk_destruct, sk_data_ready, sk_state_change are all set in this very function), which is leverageable for control-flow hijack, so integrity impact is High.\nA:H - Dereferencing the dangling `sk` pointer results in slab corruption and a kernel oops/panic, which is a full denial of service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:45:24.947Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ac3eaac4cf142a15fe67be747a682b1416efeb6e"
        },
        {
          "url": "https://git.kernel.org/stable/c/6021ccc2471b7b95e29b7cfc7938e042bf56e281"
        },
        {
          "url": "https://git.kernel.org/stable/c/32df687e129ef0f9afcbcc914f7c32deb28fd481"
        },
        {
          "url": "https://git.kernel.org/stable/c/3945c799f12b8d1f49a3b48369ca494d981ac465"
        }
      ],
      "title": "Bluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56604",
    "datePublished": "2024-12-27T14:51:09.618Z",
    "dateReserved": "2024-12-27T14:03:06.012Z",
    "dateUpdated": "2026-08-05T11:45:24.947Z",
    "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.

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.

Action not permitted

GHSA-3H24-5M24-PXVW

CVE-2024-56604 (GCVE-0-2024-56604)

Tags

Sightings

Nomenclature

Related by attack behaviour