CVE-2025-21856

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-21856
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21856.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-21856
Downstream
Related
Published
2025-03-12T09:42:09Z
Modified
2025-10-22T09:31:11.570313Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
s390/ism: add release function for struct device
Details

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

s390/ism: add release function for struct device

According to device_release() in /drivers/base/core.c, a device without a release function is a broken device and must be fixed.

The current code directly frees the device after calling device_add() without waiting for other kernel parts to release their references. Thus, a reference could still be held to a struct device, e.g., by sysfs, leading to potential use-after-free issues if a proper release function is not set.

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
8c81ba20349daf9f7e58bb05a0c12f4b71813a30
Fixed
940d15254d2216b585558bcf36312da50074e711
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8c81ba20349daf9f7e58bb05a0c12f4b71813a30
Fixed
0505ff2936f166405d81d0d454a81d9c14124344
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8c81ba20349daf9f7e58bb05a0c12f4b71813a30
Fixed
e26e8ac27351f457091459a0a355bacd06d5bb2b
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8c81ba20349daf9f7e58bb05a0c12f4b71813a30
Fixed
915e34d5ad35a6a9e56113f852ade4a730fb88f0

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
v6.12.2
v6.12.3
v6.12.4
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
v6.13.1
v6.13.2
v6.13.3
v6.13.4
v6.14-rc1
v6.14-rc2
v6.2
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
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
v6.6.11
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
v6.6.9
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

[
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0505ff2936f166405d81d0d454a81d9c14124344",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "ism_probe",
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-121af67e",
        "signature_type": "Function",
        "digest": {
            "length": 1000.0,
            "function_hash": "138845390101495969736963240939568477569"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@940d15254d2216b585558bcf36312da50074e711",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "ism_probe",
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-17e821a3",
        "signature_type": "Function",
        "digest": {
            "length": 1000.0,
            "function_hash": "138845390101495969736963240939568477569"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@940d15254d2216b585558bcf36312da50074e711",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-1dc1d125",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "149084942651257576144652536580975912711",
                "243845112551115070483410986343301455575",
                "320524599836977767927338175801974764261",
                "14444516484545848785002111750939779240",
                "242059716655612838532128724958216835647",
                "226224469404494817334039111260720740535",
                "202504458409603125730259378417113326186",
                "159172092419190238791838583105061726844",
                "336896427461437396865925777194938832884",
                "156916290511475406243342907037023953776",
                "206102514664803842996228641900368204925",
                "151671708415684505717864677094410270140",
                "182680111464042467707706379179288315321",
                "224554507972561940572270866660817282021",
                "7312265383943574775641170229852139174"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e26e8ac27351f457091459a0a355bacd06d5bb2b",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-338f9af9",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "149084942651257576144652536580975912711",
                "243845112551115070483410986343301455575",
                "320524599836977767927338175801974764261",
                "14444516484545848785002111750939779240",
                "242059716655612838532128724958216835647",
                "226224469404494817334039111260720740535",
                "202504458409603125730259378417113326186",
                "159172092419190238791838583105061726844",
                "336896427461437396865925777194938832884",
                "156916290511475406243342907037023953776",
                "206102514664803842996228641900368204925",
                "151671708415684505717864677094410270140",
                "182680111464042467707706379179288315321",
                "224554507972561940572270866660817282021",
                "7312265383943574775641170229852139174"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@940d15254d2216b585558bcf36312da50074e711",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "ism_remove",
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-4f1ed525",
        "signature_type": "Function",
        "digest": {
            "length": 232.0,
            "function_hash": "142414164391828605967592003729617778740"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e26e8ac27351f457091459a0a355bacd06d5bb2b",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "ism_remove",
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-616abeb9",
        "signature_type": "Function",
        "digest": {
            "length": 232.0,
            "function_hash": "142414164391828605967592003729617778740"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@915e34d5ad35a6a9e56113f852ade4a730fb88f0",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "ism_probe",
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-71e3cf04",
        "signature_type": "Function",
        "digest": {
            "length": 1000.0,
            "function_hash": "138845390101495969736963240939568477569"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0505ff2936f166405d81d0d454a81d9c14124344",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "ism_remove",
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-9f9cf515",
        "signature_type": "Function",
        "digest": {
            "length": 232.0,
            "function_hash": "142414164391828605967592003729617778740"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e26e8ac27351f457091459a0a355bacd06d5bb2b",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "ism_probe",
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-ceb604f4",
        "signature_type": "Function",
        "digest": {
            "length": 1000.0,
            "function_hash": "138845390101495969736963240939568477569"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@915e34d5ad35a6a9e56113f852ade4a730fb88f0",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-cf3d3756",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "149084942651257576144652536580975912711",
                "243845112551115070483410986343301455575",
                "320524599836977767927338175801974764261",
                "14444516484545848785002111750939779240",
                "242059716655612838532128724958216835647",
                "226224469404494817334039111260720740535",
                "202504458409603125730259378417113326186",
                "159172092419190238791838583105061726844",
                "336896427461437396865925777194938832884",
                "156916290511475406243342907037023953776",
                "206102514664803842996228641900368204925",
                "151671708415684505717864677094410270140",
                "182680111464042467707706379179288315321",
                "224554507972561940572270866660817282021",
                "7312265383943574775641170229852139174"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@915e34d5ad35a6a9e56113f852ade4a730fb88f0",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "ism_remove",
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-e08c2bd0",
        "signature_type": "Function",
        "digest": {
            "length": 232.0,
            "function_hash": "142414164391828605967592003729617778740"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0505ff2936f166405d81d0d454a81d9c14124344",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "file": "drivers/s390/net/ism_drv.c"
        },
        "id": "CVE-2025-21856-e6729f41",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "149084942651257576144652536580975912711",
                "243845112551115070483410986343301455575",
                "320524599836977767927338175801974764261",
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                "242059716655612838532128724958216835647",
                "226224469404494817334039111260720740535",
                "202504458409603125730259378417113326186",
                "159172092419190238791838583105061726844",
                "336896427461437396865925777194938832884",
                "156916290511475406243342907037023953776",
                "206102514664803842996228641900368204925",
                "151671708415684505717864677094410270140",
                "182680111464042467707706379179288315321",
                "224554507972561940572270866660817282021",
                "7312265383943574775641170229852139174"
            ]
        }
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.3.0
Fixed
6.6.80
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.17
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.13.5