CVE-2025-40141 (GCVE-0-2025-40141)
Vulnerability from cvelistv5
Published
2025-11-12 10:23
Modified
2026-10-15 22:02
Severity ?
8.0 (High) - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix possible UAF on iso_conn_free This attempt to fix similar issue to sco_conn_free where if the conn->sk is not set to NULL may lead to UAF on iso_conn_free.
References
Impacted products
Vendor Product Version
Linux Linux Version: ccf74f2390d60a2f9a75ef496d2564abb478f46a
Version: ccf74f2390d60a2f9a75ef496d2564abb478f46a
Version: ccf74f2390d60a2f9a75ef496d2564abb478f46a
Version: ccf74f2390d60a2f9a75ef496d2564abb478f46a
Version: ccf74f2390d60a2f9a75ef496d2564abb478f46a
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-40141",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-15T21:57:17.170509Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T22:02:38.774Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/iso.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "eba6d787ec117a5d2c60f9644e0a39c18542b6be",
              "status": "affected",
              "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "versionType": "git"
            },
            {
              "lessThan": "5319145a07d8bf5b0782b25cb3115825689d42bb",
              "status": "affected",
              "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "versionType": "git"
            },
            {
              "lessThan": "80689777919f02328eb873769de4647c9dd3e371",
              "status": "affected",
              "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "versionType": "git"
            },
            {
              "lessThan": "c92ad1a155ccfa38b87bd1d998287e1c0a24248d",
              "status": "affected",
              "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "versionType": "git"
            },
            {
              "lessThan": "9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8",
              "status": "affected",
              "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/iso.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.156",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.156",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.112",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.53",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.3",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Fix possible UAF on iso_conn_free\n\nThis attempt to fix similar issue to sco_conn_free where if the\nconn-\u003esk is not set to NULL may lead to UAF on iso_conn_free."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The vulnerable object lifetime is driven by the Bluetooth ISO/HCI connection state machine, and the final use-after-free write occurs when an HCI connect/disconnect/abort event from a Bluetooth peer drops the last `iso_conn` reference (`iso_connect_cfm`/`iso_disconn_cfm` \u2192 `iso_conn_del` \u2192 `iso_conn_free`). Per CNA guidance Bluetooth-reachable code is Adjacent, and an attacker-controlled LE Audio device can drive the CIS/BIS setup and teardown events that complete the race.\nAC:L - The attacker controls both sides of the race directly \u2014 one thread calls `listen()` (which drops the socket lock across `iso_listen_bis()`, leaving `sk_state == BT_BOUND` while `conn-\u003esk` is set) while another calls `close()`, hitting the `default:` arm of `__iso_sock_close()` that zaps the socket without clearing `conn-\u003esk`. The window can be retried indefinitely, and the delayed conn put gives a long, tunable reallocation window.\nPR:L - `iso_sock_create()` performs no capability check, so any unprivileged local user can open a `BTPROTO_ISO` `SOCK_SEQPACKET` socket and drive the listen/close race; no CAP_NET_ADMIN or root is required.\nUI:N - The race is driven entirely by the attacker\u0027s own threads plus asynchronous HCI events; no action by a legitimate user or administrator is needed.\nS:U - The corruption is confined to kernel slab memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - A use-after-free on a freed `struct iso_pinfo` lets the attacker reoccupy the slab slot with a chosen object, and the stale `conn-\u003esk` plus the `iso_sock_hold()` read of freed memory can be leveraged into kernel memory disclosure.\nI:H - `iso_conn_free()` performs an 8-byte write at a fixed offset into the freed socket object; after heap spraying this becomes a targeted write into an attacker-chosen kernel structure, enabling pointer/refcount corruption and control-flow hijack.\nA:H - The use-after-free reliably corrupts slab memory and causes kernel oops/panic (as demonstrated by the KASAN slab-use-after-free report in the sibling SCO fix), and it can be triggered repeatedly."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:08:03.741Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/eba6d787ec117a5d2c60f9644e0a39c18542b6be"
        },
        {
          "url": "https://git.kernel.org/stable/c/5319145a07d8bf5b0782b25cb3115825689d42bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/80689777919f02328eb873769de4647c9dd3e371"
        },
        {
          "url": "https://git.kernel.org/stable/c/c92ad1a155ccfa38b87bd1d998287e1c0a24248d"
        },
        {
          "url": "https://git.kernel.org/stable/c/9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8"
        }
      ],
      "title": "Bluetooth: ISO: Fix possible UAF on iso_conn_free",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40141",
    "datePublished": "2025-11-12T10:23:24.856Z",
    "dateReserved": "2025-04-16T07:20:57.171Z",
    "dateUpdated": "2026-10-15T22:02:38.774Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-40141\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-15T21:57:17.170509Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-15T21:57:18.283Z\"}}], \"cna\": {\"title\": \"Bluetooth: ISO: Fix possible UAF on iso_conn_free\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:A - The vulnerable object lifetime is driven by the Bluetooth ISO/HCI connection state machine, and the final use-after-free write occurs when an HCI connect/disconnect/abort event from a Bluetooth peer drops the last `iso_conn` reference (`iso_connect_cfm`/`iso_disconn_cfm` \\u2192 `iso_conn_del` \\u2192 `iso_conn_free`). Per CNA guidance Bluetooth-reachable code is Adjacent, and an attacker-controlled LE Audio device can drive the CIS/BIS setup and teardown events that complete the race.\\nAC:L - The attacker controls both sides of the race directly \\u2014 one thread calls `listen()` (which drops the socket lock across `iso_listen_bis()`, leaving `sk_state == BT_BOUND` while `conn-\u003esk` is set) while another calls `close()`, hitting the `default:` arm of `__iso_sock_close()` that zaps the socket without clearing `conn-\u003esk`. The window can be retried indefinitely, and the delayed conn put gives a long, tunable reallocation window.\\nPR:L - `iso_sock_create()` performs no capability check, so any unprivileged local user can open a `BTPROTO_ISO` `SOCK_SEQPACKET` socket and drive the listen/close race; no CAP_NET_ADMIN or root is required.\\nUI:N - The race is driven entirely by the attacker\u0027s own threads plus asynchronous HCI events; no action by a legitimate user or administrator is needed.\\nS:U - The corruption is confined to kernel slab memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\\nC:H - A use-after-free on a freed `struct iso_pinfo` lets the attacker reoccupy the slab slot with a chosen object, and the stale `conn-\u003esk` plus the `iso_sock_hold()` read of freed memory can be leveraged into kernel memory disclosure.\\nI:H - `iso_conn_free()` performs an 8-byte write at a fixed offset into the freed socket object; after heap spraying this becomes a targeted write into an attacker-chosen kernel structure, enabling pointer/refcount corruption and control-flow hijack.\\nA:H - The use-after-free reliably corrupts slab memory and causes kernel oops/panic (as demonstrated by the KASAN slab-use-after-free report in the sibling SCO fix), and it can be triggered repeatedly.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\", \"lessThan\": \"eba6d787ec117a5d2c60f9644e0a39c18542b6be\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\", \"lessThan\": \"5319145a07d8bf5b0782b25cb3115825689d42bb\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\", \"lessThan\": \"80689777919f02328eb873769de4647c9dd3e371\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\", \"lessThan\": \"c92ad1a155ccfa38b87bd1d998287e1c0a24248d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"ccf74f2390d60a2f9a75ef496d2564abb478f46a\", \"lessThan\": \"9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8\", \"versionType\": \"git\"}], \"programFiles\": [\"net/bluetooth/iso.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.0\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.156\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.112\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.53\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.17.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.17.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/bluetooth/iso.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/eba6d787ec117a5d2c60f9644e0a39c18542b6be\"}, {\"url\": \"https://git.kernel.org/stable/c/5319145a07d8bf5b0782b25cb3115825689d42bb\"}, {\"url\": \"https://git.kernel.org/stable/c/80689777919f02328eb873769de4647c9dd3e371\"}, {\"url\": \"https://git.kernel.org/stable/c/c92ad1a155ccfa38b87bd1d998287e1c0a24248d\"}, {\"url\": \"https://git.kernel.org/stable/c/9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: ISO: Fix possible UAF on iso_conn_free\\n\\nThis attempt to fix similar issue to sco_conn_free where if the\\nconn-\u003esk is not set to NULL may lead to UAF on iso_conn_free.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.156\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.112\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.53\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.17.3\", \"versionStartIncluding\": \"6.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18\", \"versionStartIncluding\": \"6.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T12:08:03.741Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-40141\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-15T22:02:38.774Z\", \"dateReserved\": \"2025-04-16T07:20:57.171Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-11-12T10:23:24.856Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.