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

Vulnerability from cvelistv5 – Published: 2026-07-19 15:41 – Updated: 2026-07-19 15:41
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
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
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)
Create a notification for this product.
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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{
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          "vendor": "Linux",
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              "version": "6.6.142",
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              "version": "7.1",
              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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      "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.)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:41:02.293Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a75bbcb10cb21acc169b785e9804f57d97873a9c"
        },
        {
          "url": "https://git.kernel.org/stable/c/4907596f25b1720fa948371ac5f6c1f8da10a5bc"
        },
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        {
          "url": "https://git.kernel.org/stable/c/59e932ded949fa6f0340bf7c6d7818f962fa4fd2"
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      "title": "Bluetooth: bnep: Fix UAF read of dev-\u003ename",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64178",
    "datePublished": "2026-07-19T15:41:02.293Z",
    "dateReserved": "2026-07-19T07:54:57.039Z",
    "dateUpdated": "2026-07-19T15:41:02.293Z",
    "state": "PUBLISHED"
  },
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-20T13:02:39+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"
    }
  }
}



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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.