CVE-2025-39861

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-39861
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39861.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-39861
Downstream
Related
Published
2025-09-19T15:26:31.519Z
Modified
2025-11-20T10:37:57.217884Z
Summary
Bluetooth: vhci: Prevent use-after-free by removing debugfs files early
Details

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

Bluetooth: vhci: Prevent use-after-free by removing debugfs files early

Move the creation of debugfs files into a dedicated function, and ensure they are explicitly removed during vhci_release(), before associated data structures are freed.

Previously, debugfs files such as "forcesuspend", "forcewakeup", and others were created under hdev->debugfs but not removed in vhcirelease(). Since vhcirelease() frees the backing vhci_data structure, any access to these files after release would result in use-after-free errors.

Although hdev->debugfs is later freed in hcireleasedev(), user can access files after vhci_data is freed but before hdev->debugfs is released.

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ab4e4380d4e158486e595013a2635190e07e28ce
Fixed
bd75eba88e88d7b896b0c737b02a74a12afc235f
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ab4e4380d4e158486e595013a2635190e07e28ce
Fixed
1503756fffe76d5aea2371a4b8dee20c3577bcfd
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ab4e4380d4e158486e595013a2635190e07e28ce
Fixed
7cc08f2f127b9a66f46ea918e34353811a7cb378
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ab4e4380d4e158486e595013a2635190e07e28ce
Fixed
28010791193a4503f054e8d69a950ef815deb539

Affected versions

v6.*

v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.12.1
v6.12.10
v6.12.11
v6.12.12
v6.12.13
v6.12.14
v6.12.15
v6.12.16
v6.12.17
v6.12.18
v6.12.19
v6.12.2
v6.12.20
v6.12.21
v6.12.22
v6.12.23
v6.12.24
v6.12.25
v6.12.26
v6.12.27
v6.12.28
v6.12.29
v6.12.3
v6.12.30
v6.12.31
v6.12.32
v6.12.33
v6.12.34
v6.12.35
v6.12.36
v6.12.37
v6.12.38
v6.12.39
v6.12.4
v6.12.40
v6.12.41
v6.12.42
v6.12.43
v6.12.44
v6.12.45
v6.12.5
v6.12.6
v6.12.7
v6.12.8
v6.12.9
v6.13
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.13-rc7
v6.14
v6.14-rc1
v6.14-rc2
v6.14-rc3
v6.14-rc4
v6.14-rc5
v6.14-rc6
v6.14-rc7
v6.15
v6.15-rc1
v6.15-rc2
v6.15-rc3
v6.15-rc4
v6.15-rc5
v6.15-rc6
v6.15-rc7
v6.16
v6.16-rc1
v6.16-rc2
v6.16-rc3
v6.16-rc4
v6.16-rc5
v6.16-rc6
v6.16-rc7
v6.16.1
v6.16.2
v6.16.3
v6.16.4
v6.16.5
v6.17-rc1
v6.17-rc2
v6.3
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.6.1
v6.6.10
v6.6.100
v6.6.101
v6.6.102
v6.6.103
v6.6.104
v6.6.11
v6.6.12
v6.6.13
v6.6.14
v6.6.15
v6.6.16
v6.6.17
v6.6.18
v6.6.19
v6.6.2
v6.6.20
v6.6.21
v6.6.22
v6.6.23
v6.6.24
v6.6.25
v6.6.26
v6.6.27
v6.6.28
v6.6.29
v6.6.3
v6.6.30
v6.6.31
v6.6.32
v6.6.33
v6.6.34
v6.6.35
v6.6.36
v6.6.37
v6.6.38
v6.6.39
v6.6.4
v6.6.40
v6.6.41
v6.6.42
v6.6.43
v6.6.44
v6.6.45
v6.6.46
v6.6.47
v6.6.48
v6.6.49
v6.6.5
v6.6.50
v6.6.51
v6.6.52
v6.6.53
v6.6.54
v6.6.55
v6.6.56
v6.6.57
v6.6.58
v6.6.59
v6.6.6
v6.6.60
v6.6.61
v6.6.62
v6.6.63
v6.6.64
v6.6.65
v6.6.66
v6.6.67
v6.6.68
v6.6.69
v6.6.7
v6.6.70
v6.6.71
v6.6.72
v6.6.73
v6.6.74
v6.6.75
v6.6.76
v6.6.77
v6.6.78
v6.6.79
v6.6.8
v6.6.80
v6.6.81
v6.6.82
v6.6.83
v6.6.84
v6.6.85
v6.6.86
v6.6.87
v6.6.88
v6.6.89
v6.6.9
v6.6.90
v6.6.91
v6.6.92
v6.6.93
v6.6.94
v6.6.95
v6.6.96
v6.6.97
v6.6.98
v6.6.99
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.8
v6.8-rc1
v6.8-rc2
v6.8-rc3
v6.8-rc4
v6.8-rc5
v6.8-rc6
v6.8-rc7
v6.9
v6.9-rc1
v6.9-rc2
v6.9-rc3
v6.9-rc4
v6.9-rc5
v6.9-rc6
v6.9-rc7

Database specific

vanir_signatures

[
    {
        "target": {
            "file": "drivers/bluetooth/hci_vhci.c"
        },
        "digest": {
            "line_hashes": [
                "337017869479544725591896912897710713495",
                "250709777616368109364927731366584644850",
                "159046690768806212120392454230219180911",
                "179453261661544361949430564859309371758",
                "123879112168514101979266504195099823621",
                "237888052837933005139526559048260146755",
                "184041324830377279064738766284542595679",
                "77889929587199887379126354717451984824",
                "318505707318608295354376101421717416938",
                "111261245345249329621858932945725741367",
                "221479739490144698170959277479275441516",
                "304010858699350232945476889467605054086",
                "98043591822853198206567491863187952165",
                "154611365968205248223505198014745243050",
                "287920919645497003724366624763782473615",
                "79732038729685339805975995151473841159",
                "332193469962416461557645506596038969192",
                "225152139430304842972215139945058518009",
                "283672643874248288459510042023796560775",
                "179697819132022505997107697154571459932",
                "334950151667745482765502106013890754421",
                "101970277128736823071448337955572285238",
                "59882833749102183659460075589793928982",
                "149796852114843278507267711929567582017",
                "22544430602925896043251174463402370500"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@28010791193a4503f054e8d69a950ef815deb539",
        "deprecated": false,
        "id": "CVE-2025-39861-09967891",
        "signature_type": "Line"
    },
    {
        "target": {
            "function": "__vhci_create_device",
            "file": "drivers/bluetooth/hci_vhci.c"
        },
        "digest": {
            "length": 1821.0,
            "function_hash": "103239599317040294131632795153628518715"
        },
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@28010791193a4503f054e8d69a950ef815deb539",
        "deprecated": false,
        "id": "CVE-2025-39861-3d9bad1b",
        "signature_type": "Function"
    },
    {
        "target": {
            "file": "drivers/bluetooth/hci_vhci.c"
        },
        "digest": {
            "line_hashes": [
                "337017869479544725591896912897710713495",
                "250709777616368109364927731366584644850",
                "159046690768806212120392454230219180911",
                "179453261661544361949430564859309371758",
                "123879112168514101979266504195099823621",
                "237888052837933005139526559048260146755",
                "184041324830377279064738766284542595679",
                "77889929587199887379126354717451984824",
                "318505707318608295354376101421717416938",
                "111261245345249329621858932945725741367",
                "221479739490144698170959277479275441516",
                "304010858699350232945476889467605054086",
                "98043591822853198206567491863187952165",
                "154611365968205248223505198014745243050",
                "287920919645497003724366624763782473615",
                "79732038729685339805975995151473841159",
                "332193469962416461557645506596038969192",
                "225152139430304842972215139945058518009",
                "287482821057425443259726097889937588609",
                "179697819132022505997107697154571459932",
                "334950151667745482765502106013890754421",
                "101970277128736823071448337955572285238",
                "59882833749102183659460075589793928982",
                "149796852114843278507267711929567582017",
                "22544430602925896043251174463402370500"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1503756fffe76d5aea2371a4b8dee20c3577bcfd",
        "deprecated": false,
        "id": "CVE-2025-39861-4119b615",
        "signature_type": "Line"
    },
    {
        "target": {
            "function": "__vhci_create_device",
            "file": "drivers/bluetooth/hci_vhci.c"
        },
        "digest": {
            "length": 1803.0,
            "function_hash": "224097428942704312578487991361246307133"
        },
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1503756fffe76d5aea2371a4b8dee20c3577bcfd",
        "deprecated": false,
        "id": "CVE-2025-39861-491ea543",
        "signature_type": "Function"
    },
    {
        "target": {
            "function": "__vhci_create_device",
            "file": "drivers/bluetooth/hci_vhci.c"
        },
        "digest": {
            "length": 1862.0,
            "function_hash": "207063882931041288459246949197400643009"
        },
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@bd75eba88e88d7b896b0c737b02a74a12afc235f",
        "deprecated": false,
        "id": "CVE-2025-39861-64ce8d02",
        "signature_type": "Function"
    },
    {
        "target": {
            "function": "vhci_release",
            "file": "drivers/bluetooth/hci_vhci.c"
        },
        "digest": {
            "length": 348.0,
            "function_hash": "244226211545505590444313616493901259997"
        },
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@bd75eba88e88d7b896b0c737b02a74a12afc235f",
        "deprecated": false,
        "id": "CVE-2025-39861-6bd14f1d",
        "signature_type": "Function"
    },
    {
        "target": {
            "function": "vhci_release",
            "file": "drivers/bluetooth/hci_vhci.c"
        },
        "digest": {
            "length": 348.0,
            "function_hash": "244226211545505590444313616493901259997"
        },
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1503756fffe76d5aea2371a4b8dee20c3577bcfd",
        "deprecated": false,
        "id": "CVE-2025-39861-97ec9abc",
        "signature_type": "Function"
    },
    {
        "target": {
            "file": "drivers/bluetooth/hci_vhci.c"
        },
        "digest": {
            "line_hashes": [
                "337017869479544725591896912897710713495",
                "250709777616368109364927731366584644850",
                "159046690768806212120392454230219180911",
                "179453261661544361949430564859309371758",
                "123879112168514101979266504195099823621",
                "237888052837933005139526559048260146755",
                "184041324830377279064738766284542595679",
                "77889929587199887379126354717451984824",
                "318505707318608295354376101421717416938",
                "111261245345249329621858932945725741367",
                "221479739490144698170959277479275441516",
                "304010858699350232945476889467605054086",
                "98043591822853198206567491863187952165",
                "154611365968205248223505198014745243050",
                "287920919645497003724366624763782473615",
                "79732038729685339805975995151473841159",
                "332193469962416461557645506596038969192",
                "225152139430304842972215139945058518009",
                "287482821057425443259726097889937588609",
                "179697819132022505997107697154571459932",
                "334950151667745482765502106013890754421",
                "101970277128736823071448337955572285238",
                "59882833749102183659460075589793928982",
                "149796852114843278507267711929567582017",
                "22544430602925896043251174463402370500"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@bd75eba88e88d7b896b0c737b02a74a12afc235f",
        "deprecated": false,
        "id": "CVE-2025-39861-9c3f86a1",
        "signature_type": "Line"
    },
    {
        "target": {
            "function": "vhci_release",
            "file": "drivers/bluetooth/hci_vhci.c"
        },
        "digest": {
            "length": 348.0,
            "function_hash": "244226211545505590444313616493901259997"
        },
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@28010791193a4503f054e8d69a950ef815deb539",
        "deprecated": false,
        "id": "CVE-2025-39861-c98e5fc4",
        "signature_type": "Function"
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.4.0
Fixed
6.6.105
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.46
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.16.6