Vulnerability-Lookup

FKIE_CVE-2025-38303

Vulnerability from fkie_nvd - Published: 2025-07-10 08:15 - Updated: 2026-07-30 06:23

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: eir: Fix possible crashes on eir_create_adv_data eir_create_adv_data may attempt to add EIR_FLAGS and EIR_TX_POWER without checking if that would fit.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2af40d795d3fb0ee5c074b7ac56ab22402aa6e4f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2d4588f55cc10fc228f3b46469dbfb3f0a8b13c8
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/47c03902269aff377f959dc3fd94a9733aa31d6e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b9db0c27e73b7c8a19384a44af527edfda74ff3d	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.16

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/eir.c",
            "net/bluetooth/eir.h",
            "net/bluetooth/hci_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2d4588f55cc10fc228f3b46469dbfb3f0a8b13c8",
              "status": "affected",
              "version": "01ce70b0a274bd76a5a311fb90d4d446d9bdfea1",
              "versionType": "git"
            },
            {
              "lessThan": "2af40d795d3fb0ee5c074b7ac56ab22402aa6e4f",
              "status": "affected",
              "version": "01ce70b0a274bd76a5a311fb90d4d446d9bdfea1",
              "versionType": "git"
            },
            {
              "lessThan": "b9db0c27e73b7c8a19384a44af527edfda74ff3d",
              "status": "affected",
              "version": "01ce70b0a274bd76a5a311fb90d4d446d9bdfea1",
              "versionType": "git"
            },
            {
              "lessThan": "47c03902269aff377f959dc3fd94a9733aa31d6e",
              "status": "affected",
              "version": "01ce70b0a274bd76a5a311fb90d4d446d9bdfea1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/eir.c",
            "net/bluetooth/eir.h",
            "net/bluetooth/hci_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EE65E176-D370-4F66-971E-A0E3513C9C2B",
              "versionEndExcluding": "6.12.34",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0541C761-BD5E-4C1A-8432-83B375D7EB92",
              "versionEndExcluding": "6.15.3",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: eir: Fix possible crashes on eir_create_adv_data\n\neir_create_adv_data may attempt to add EIR_FLAGS and EIR_TX_POWER\nwithout checking if that would fit."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: eir: Se solucionan posibles fallos en eir_create_adv_data eir_create_adv_data puede intentar agregar EIR_FLAGS y EIR_TX_POWER sin verificar si encajan."
    }
  ],
  "id": "CVE-2025-38303",
  "lastModified": "2026-07-30T06:23:06.767",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-07-10T08:15:29.090",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2af40d795d3fb0ee5c074b7ac56ab22402aa6e4f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2d4588f55cc10fc228f3b46469dbfb3f0a8b13c8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/47c03902269aff377f959dc3fd94a9733aa31d6e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b9db0c27e73b7c8a19384a44af527edfda74ff3d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-38303 (GCVE-0-2025-38303)

Vulnerability from cvelistv5 – Published: 2025-07-10 07:42 – Updated: 2026-08-05 12:01

Title

Bluetooth: eir: Fix possible crashes on eir_create_adv_data

Summary

Severity

7.8 (High)


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

Assigner

Linux mitre root Scorecard

References

4 references

URL	Tags
https://git.kernel.org/stable/c/2d4588f55cc10fc22…
https://git.kernel.org/stable/c/2af40d795d3fb0ee5…
https://git.kernel.org/stable/c/b9db0c27e73b7c8a1…
https://git.kernel.org/stable/c/47c03902269aff377…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 01ce70b0a274bd76a5a311fb90d4d446d9bdfea1 , < 2d4588f55cc10fc228f3b46469dbfb3f0a8b13c8 (git) Affected: 01ce70b0a274bd76a5a311fb90d4d446d9bdfea1 , < 2af40d795d3fb0ee5c074b7ac56ab22402aa6e4f (git) Affected: 01ce70b0a274bd76a5a311fb90d4d446d9bdfea1 , < b9db0c27e73b7c8a19384a44af527edfda74ff3d (git) Affected: 01ce70b0a274bd76a5a311fb90d4d446d9bdfea1 , < 47c03902269aff377f959dc3fd94a9733aa31d6e (git)
Linux	Linux	Affected: 5.16 Unaffected: 0 , < 5.16 (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.12.34 , ≤ 6.12.* (semver) Unaffected: 6.15.3 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/eir.c",
            "net/bluetooth/eir.h",
            "net/bluetooth/hci_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2d4588f55cc10fc228f3b46469dbfb3f0a8b13c8",
              "status": "affected",
              "version": "01ce70b0a274bd76a5a311fb90d4d446d9bdfea1",
              "versionType": "git"
            },
            {
              "lessThan": "2af40d795d3fb0ee5c074b7ac56ab22402aa6e4f",
              "status": "affected",
              "version": "01ce70b0a274bd76a5a311fb90d4d446d9bdfea1",
              "versionType": "git"
            },
            {
              "lessThan": "b9db0c27e73b7c8a19384a44af527edfda74ff3d",
              "status": "affected",
              "version": "01ce70b0a274bd76a5a311fb90d4d446d9bdfea1",
              "versionType": "git"
            },
            {
              "lessThan": "47c03902269aff377f959dc3fd94a9733aa31d6e",
              "status": "affected",
              "version": "01ce70b0a274bd76a5a311fb90d4d446d9bdfea1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/eir.c",
            "net/bluetooth/eir.h",
            "net/bluetooth/hci_sync.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.168",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.34",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.3",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: eir: Fix possible crashes on eir_create_adv_data\n\neir_create_adv_data may attempt to add EIR_FLAGS and EIR_TX_POWER\nwithout checking if that would fit."
        }
      ],
      "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 overflow is driven entirely by locally-configured advertising data submitted over an AF_BLUETOOTH HCI control socket (MGMT_OP_ADD_ADVERTISING / MGMT_OP_ADD_EXT_ADV_DATA), so local system access is mandatory. No adjacent or remote Bluetooth peer supplies any of the data consumed by eir_create_adv_data(), since advertising payloads are outbound and locally authored.\nAC:L - The attacker deterministically controls every input to the overflow \u2014 the adv instance flags (MGMT_ADV_FLAG_TX_POWER without a managed-flags bit), the exact adv_data_len at the tlv_data_max_len ceiling, and the BR/EDR-disabled state (MGMT_OP_SET_BREDR) that makes the kernel prepend the unbudgeted LE_AD_NO_BREDR Flags AD. There is no race, no timing window, and no memory-layout precondition outside the attacker\u0027s influence.\nPR:L - The handlers lack HCI_MGMT_UNTRUSTED so the socket must be CAP_NET_ADMIN-trusted, but in the realistic Bluetooth deployments for this code (Android\u0027s non-root AID_BLUETOOTH service, ChromeOS/embedded/automotive BT daemons) that capability is held by an unprivileged, remotely-exposed, SELinux-confined daemon rather than by root. A compromised Bluetooth daemon \u2014 far short of full admin \u2014 is sufficient to reach the bug.\nUI:N - The attacker issues every mgmt command needed (set bredr off, add advertising with a max-length payload) from its own socket, and the overflow fires from the hci_cmd_sync_work kthread without any victim action. No pairing, connection, or user-initiated operation by another party is involved.\nS:U - The corruption occurs on the kernel stack of the Bluetooth command-sync worker, within the same kernel security authority as the vulnerable code. No VM, IOMMU, container, or sandbox boundary is crossed.\nC:H - In the extended-advertising path the inflated return value propagates into struct_size(pdu, data, len), so the HCI command skb is assembled from bytes beyond the 255-byte stack object, leaking adjacent kernel stack contents into the HCI command stream and to HCI monitor consumers; the legacy path similarly publishes hdev-\u003eadv_data_len = 34 with only 31 valid bytes. Combined with the stack-corruption primitive, this is leverageable for kernel memory disclosure.\nI:H - This is an out-of-bounds write past a fixed-size stack buffer, placing attacker-influenced bytes (0x02, EIR_TX_POWER, and a tx_power value the attacker can steer via the advertising parameters) into adjacent stack storage of the hci_cmd_sync_work frame. Per the OOB-write classification this is a control-flow-relevant corruption primitive, not a mere bad read.\nA:H - The commit is titled \"Fix possible crashes\" and the confirmed KASAN report on this code shows stack-out-of-bounds writes in eir_create_adv_data() from hci_cmd_sync_work. On stack-protector kernels overwriting past the buffer trips __stack_chk_fail and panics the machine; otherwise it oopses or corrupts the worker\u0027s frame, taking down the Bluetooth subsystem or the system."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:01:04.412Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2d4588f55cc10fc228f3b46469dbfb3f0a8b13c8"
        },
        {
          "url": "https://git.kernel.org/stable/c/2af40d795d3fb0ee5c074b7ac56ab22402aa6e4f"
        },
        {
          "url": "https://git.kernel.org/stable/c/b9db0c27e73b7c8a19384a44af527edfda74ff3d"
        },
        {
          "url": "https://git.kernel.org/stable/c/47c03902269aff377f959dc3fd94a9733aa31d6e"
        }
      ],
      "title": "Bluetooth: eir: Fix possible crashes on eir_create_adv_data",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38303",
    "datePublished": "2025-07-10T07:42:14.728Z",
    "dateReserved": "2025-04-16T04:51:24.002Z",
    "dateUpdated": "2026-08-05T12:01:04.412Z",
    "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

FKIE_CVE-2025-38303

CVE-2025-38303 (GCVE-0-2025-38303)

Tags

Sightings

Nomenclature

Related by attack behaviour