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CVE-2026-64178 (GCVE-0-2026-64178)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:41 – Updated: 2026-08-05 12:39
VLAI
Title
Bluetooth: bnep: Fix UAF read of dev->name
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: Fix UAF read of dev->name bnep_add_connection() needs to keep holding the bnep_session_sem while reading dev->name (just like bnep_get_connlist() does); otherwise the bnep_session() thread can concurrently free the net_device, which can for example be triggered by a concurrent bnep_del_connection(). (This UAF is fairly uninteresting from a security perspective; calling bnep_add_connection() requires passing a capable(CAP_NET_ADMIN) check. It also requires completely tearing down a netdev during a fairly tight race window.)
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a75bbcb10cb21acc169b785e9804f57d97873a9c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4907596f25b1720fa948371ac5f6c1f8da10a5bc (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 915a92182e2cda9cd7d2479020a44c6eda986f7c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fe69f634b076ae3ca81c5a5b845d9bba527036f7 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b21805258d7e926adfd455fc820a447b90da3b82 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5506aec795135cdd4cbf4e845929155663b25055 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e7578529b97e5d4e439cf8f3e637c2303015338f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 59e932ded949fa6f0340bf7c6d7818f962fa4fd2 (git)
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Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.142 , ≤ 6.6.* (semver)
Unaffected: 6.12.92 , ≤ 6.12.* (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: bnep: Fix UAF read of dev-\u003ename\n\nbnep_add_connection() needs to keep holding the bnep_session_sem while\nreading dev-\u003ename (just like bnep_get_connlist() does); otherwise the\nbnep_session() thread can concurrently free the net_device, which can for\nexample be triggered by a concurrent bnep_del_connection().\n\n(This UAF is fairly uninteresting from a security perspective;\ncalling bnep_add_connection() requires passing a capable(CAP_NET_ADMIN)\ncheck. It also requires completely tearing down a netdev during a fairly\ntight race window.)"
          }
        ],
        "id": "CVE-2026-64178",
        "lastModified": "2026-08-12T15:31:35.053",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "ADJACENT_NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-07-19T16:18:00.147",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/4907596f25b1720fa948371ac5f6c1f8da10a5bc"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/5506aec795135cdd4cbf4e845929155663b25055"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/59e932ded949fa6f0340bf7c6d7818f962fa4fd2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/915a92182e2cda9cd7d2479020a44c6eda986f7c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a75bbcb10cb21acc169b785e9804f57d97873a9c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b21805258d7e926adfd455fc820a447b90da3b82"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/e7578529b97e5d4e439cf8f3e637c2303015338f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/fe69f634b076ae3ca81c5a5b845d9bba527036f7"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-20T16:47:54+00:00",
      "cve": "CVE-2026-64178",
      "id": "CVE-2026-64178",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "274",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: bnep: Fix UAF read of dev-\u003ename",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64178.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-18T00:43:13Z",
      "cve": "CVE-2026-64178",
      "id": "CVE-2026-64178",
      "initial_release_date": "2026-07-21T12:58:16Z",
      "product_status:first_fixed": "23",
      "product_status:known_affected": "675",
      "product_status:known_not_affected": "58",
      "product_status:recommended": "107",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64178",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64178.json",
      "version": "10"
    }
  }
}



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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.