CVE-2025-37905

Using devicefindchild() to lookup the proper SCMI device to destroy causes an unbalance in device refcount, since devicefindchild() calls an implicit get_device(): this, in turns, inhibits the call of the provided release methods upon devices destruction.

As a consequence, one of the structures that is not freed properly upon destruction is the internal struct device_private dev->p populated by the drivers subsystem core.

KMemleak detects this situation since loading/unloding some SCMI driver causes related devices to be created/destroyed without calling any device_release method.

unreferenced object 0xffff00000f583800 (size 512): comm "insmod", pid 227, jiffies 4294912190 hex dump (first 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff 60 36 1d 8a 00 80 ff ff ........`6...... backtrace (crc 114e2eed): kmemleakalloc+0xbc/0xd8 _kmalloccachenoprof+0x2dc/0x398 deviceadd+0x954/0x12d0 deviceregister+0x28/0x40 _scmidevicecreate.part.0+0x1bc/0x380 scmidevicecreate+0x2d0/0x390 scmicreateprotocoldevices+0x74/0xf8 scmidevicerequestnotifier+0x1f8/0x2a8 notifiercallchain+0x110/0x3b0 blockingnotifiercallchain+0x70/0xb0 scmidriverregister+0x350/0x7f0 0xffff80000a3b3038 dooneinitcall+0x12c/0x730 doinitmodule+0x1dc/0x640 loadmodule+0x4b20/0x5b70 initmodulefromfile+0xec/0x158

$ ./scripts/faddr2line ./vmlinux deviceadd+0x954/0x12d0 deviceadd+0x954/0x12d0: kmallocnoprof at include/linux/slab.h:901 (inlined by) kzallocnoprof at include/linux/slab.h:1037 (inlined by) deviceprivateinit at drivers/base/core.c:3510 (inlined by) device_add at drivers/base/core.c:3561

Balance device refcount by issuing a putdevice() on devices found via devicefind_child().

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

d4f9dddd21f39395c62ea12d3d91239637d4805f

Fixed

91ff1e9652fb9beb0174267d6bb38243dff211bb

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

d4f9dddd21f39395c62ea12d3d91239637d4805f

Fixed

ff4273d47da81b95ed9396110bcbd1b7b7470fe8

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

d4f9dddd21f39395c62ea12d3d91239637d4805f

Fixed

2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

d4f9dddd21f39395c62ea12d3d91239637d4805f

Fixed

969d8beaa2e374387bf9aa5602ef84fc50bb48d8

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

d4f9dddd21f39395c62ea12d3d91239637d4805f

Fixed

8a8a3547d5c4960da053df49c75bf623827a25da

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

d4f9dddd21f39395c62ea12d3d91239637d4805f

Fixed

9ca67840c0ddf3f39407339624cef824a4f27599

Affected versions

v5.*

v5.12

v5.12-rc3

v5.12-rc4

v5.12-rc5

v5.12-rc6

v5.12-rc7

v5.12-rc8

v5.13

v5.13-rc1

v5.13-rc2

v5.13-rc3

v5.13-rc4

v5.13-rc5

v5.13-rc6

v5.13-rc7

v5.14

v5.14-rc1

v5.14-rc2

v5.14-rc3

v5.14-rc4

v5.14-rc5

v5.14-rc6

v5.14-rc7

v5.15

v5.15-rc1

v5.15-rc2

v5.15-rc3

v5.15-rc4

v5.15-rc5

v5.15-rc6

v5.15-rc7

v5.15.1

v5.15.10

v5.15.100

v5.15.101

v5.15.102

v5.15.103

v5.15.104

v5.15.105

v5.15.106

v5.15.107

v5.15.108

v5.15.109

v5.15.11

v5.15.110

v5.15.111

v5.15.112

v5.15.113

v5.15.114

v5.15.115

v5.15.116

v5.15.117

v5.15.118

v5.15.119

v5.15.12

v5.15.120

v5.15.121

v5.15.122

v5.15.123

v5.15.124

v5.15.125

v5.15.126

v5.15.127

v5.15.128

v5.15.129

v5.15.13

v5.15.130

v5.15.131

v5.15.132

v5.15.133

v5.15.134

v5.15.135

v5.15.136

v5.15.137

v5.15.138

v5.15.139

v5.15.14

v5.15.140

v5.15.141

v5.15.142

v5.15.143

v5.15.144

v5.15.145

v5.15.146

v5.15.147

v5.15.148

v5.15.149

v5.15.15

v5.15.150

v5.15.151

v5.15.152

v5.15.153

v5.15.154

v5.15.155

v5.15.156

v5.15.157

v5.15.158

v5.15.159

v5.15.16

v5.15.160

v5.15.161

v5.15.162

v5.15.163

v5.15.164

v5.15.165

v5.15.166

v5.15.167

v5.15.168

v5.15.169

v5.15.17

v5.15.170

v5.15.171

v5.15.172

v5.15.173

v5.15.174

v5.15.175

v5.15.176

v5.15.177

v5.15.178

v5.15.179

v5.15.18

v5.15.180

v5.15.181

v5.15.19

v5.15.2

v5.15.20

v5.15.21

v5.15.22

v5.15.23

v5.15.24

v5.15.25

v5.15.26

v5.15.27

v5.15.28

v5.15.29

v5.15.3

v5.15.30

v5.15.31

v5.15.32

v5.15.33

v5.15.34

v5.15.35

v5.15.36

v5.15.37

v5.15.38

v5.15.39

v5.15.4

v5.15.40

v5.15.41

v5.15.42

v5.15.43

v5.15.44

v5.15.45

v5.15.46

v5.15.47

v5.15.48

v5.15.49

v5.15.5

v5.15.50

v5.15.51

v5.15.52

v5.15.53

v5.15.54

v5.15.55

v5.15.56

v5.15.57

v5.15.58

v5.15.59

v5.15.6

v5.15.60

v5.15.61

v5.15.62

v5.15.63

v5.15.64

v5.15.65

v5.15.66

v5.15.67

v5.15.68

v5.15.69

v5.15.7

v5.15.70

v5.15.71

v5.15.72

v5.15.73

v5.15.74

v5.15.75

v5.15.76

v5.15.77

v5.15.78

v5.15.79

v5.15.8

v5.15.80

v5.15.81

v5.15.82

v5.15.83

v5.15.84

v5.15.85

v5.15.86

v5.15.87

v5.15.88

v5.15.89

v5.15.9

v5.15.90

v5.15.91

v5.15.92

v5.15.93

v5.15.94

v5.15.95

v5.15.96

v5.15.97

v5.15.98

v5.15.99

v5.16

v5.16-rc1

v5.16-rc2

v5.16-rc3

v5.16-rc4

v5.16-rc5

v5.16-rc6

v5.16-rc7

v5.16-rc8

v5.17

v5.17-rc1

v5.17-rc2

v5.17-rc3

v5.17-rc4

v5.17-rc5

v5.17-rc6

v5.17-rc7

v5.17-rc8

v5.18

v5.18-rc1

v5.18-rc2

v5.18-rc3

v5.18-rc4

v5.18-rc5

v5.18-rc6

v5.18-rc7

v5.19

v5.19-rc1

v5.19-rc2

v5.19-rc3

v5.19-rc4

v5.19-rc5

v5.19-rc6

v5.19-rc7

v5.19-rc8

v6.*

v6.0

v6.0-rc1

v6.0-rc2

v6.0-rc3

v6.0-rc4

v6.0-rc5

v6.0-rc6

v6.0-rc7

v6.1

v6.1-rc1

v6.1-rc2

v6.1-rc3

v6.1-rc4

v6.1-rc5

v6.1-rc6

v6.1-rc7

v6.1-rc8

v6.1.1

v6.1.10

v6.1.100

v6.1.101

v6.1.102

v6.1.103

v6.1.104

v6.1.105

v6.1.106

v6.1.107

v6.1.108

v6.1.109

v6.1.11

v6.1.110

v6.1.111

v6.1.112

v6.1.113

v6.1.114

v6.1.115

v6.1.116

v6.1.117

v6.1.118

v6.1.119

v6.1.12

v6.1.120

v6.1.121

v6.1.122

v6.1.123

v6.1.124

v6.1.125

v6.1.126

v6.1.127

v6.1.128

v6.1.129

v6.1.13

v6.1.130

v6.1.131

v6.1.132

v6.1.133

v6.1.134

v6.1.135

v6.1.136

v6.1.137

v6.1.14

v6.1.15

v6.1.16

v6.1.17

v6.1.18

v6.1.19

v6.1.2

v6.1.20

v6.1.21

v6.1.22

v6.1.23

v6.1.24

v6.1.25

v6.1.26

v6.1.27

v6.1.28

v6.1.29

v6.1.3

v6.1.30

v6.1.31

v6.1.32

v6.1.33

v6.1.34

v6.1.35

v6.1.36

v6.1.37

v6.1.38

v6.1.39

v6.1.4

v6.1.40

v6.1.41

v6.1.42

v6.1.43

v6.1.44

v6.1.45

v6.1.46

v6.1.47

v6.1.48

v6.1.49

v6.1.5

v6.1.50

v6.1.51

v6.1.52

v6.1.53

v6.1.54

v6.1.55

v6.1.56

v6.1.57

v6.1.58

v6.1.59

v6.1.6

v6.1.60

v6.1.61

v6.1.62

v6.1.63

v6.1.64

v6.1.65

v6.1.66

v6.1.67

v6.1.68

v6.1.69

v6.1.7

v6.1.70

v6.1.71

v6.1.72

v6.1.73

v6.1.74

v6.1.75

v6.1.76

v6.1.77

v6.1.78

v6.1.79

v6.1.8

v6.1.80

v6.1.81

v6.1.82

v6.1.83

v6.1.84

v6.1.85

v6.1.86

v6.1.87

v6.1.88

v6.1.89

v6.1.9

v6.1.90

v6.1.91

v6.1.92

v6.1.93

v6.1.94

v6.1.95

v6.1.96

v6.1.97

v6.1.98

v6.1.99

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

v6.12.3

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

v6.14

v6.14-rc1

v6.14-rc2

v6.14-rc3

v6.14-rc4

v6.14-rc5

v6.14-rc6

v6.14-rc7

v6.14.1

v6.14.2

v6.14.3

v6.14.4

v6.14.5

v6.15-rc1

v6.2

v6.2-rc1

v6.2-rc2

v6.2-rc3

v6.2-rc4

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

v6.6.80

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

v6.7

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

[
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@91ff1e9652fb9beb0174267d6bb38243dff211bb",
        "signature_version": "v1",
        "signature_type": "Function",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c",
            "function": "scmi_child_dev_find"
        },
        "id": "CVE-2025-37905-156c3c3a",
        "digest": {
            "length": 263.0,
            "function_hash": "250581595955360828278541763981178357954"
        },
        "deprecated": false
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    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9ca67840c0ddf3f39407339624cef824a4f27599",
        "signature_version": "v1",
        "signature_type": "Function",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c",
            "function": "scmi_child_dev_find"
        },
        "id": "CVE-2025-37905-1c603111",
        "digest": {
            "length": 270.0,
            "function_hash": "173589368963589814136936318906788208942"
        },
        "deprecated": false
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3",
        "signature_version": "v1",
        "signature_type": "Function",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c",
            "function": "scmi_child_dev_find"
        },
        "id": "CVE-2025-37905-4585fa08",
        "digest": {
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            "function_hash": "173589368963589814136936318906788208942"
        },
        "deprecated": false
    },
    {
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        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c"
        },
        "id": "CVE-2025-37905-45a60b09",
        "digest": {
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        "signature_version": "v1",
        "signature_type": "Function",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c",
            "function": "scmi_child_dev_find"
        },
        "id": "CVE-2025-37905-659c683a",
        "digest": {
            "length": 270.0,
            "function_hash": "173589368963589814136936318906788208942"
        },
        "deprecated": false
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@91ff1e9652fb9beb0174267d6bb38243dff211bb",
        "signature_version": "v1",
        "signature_type": "Line",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c"
        },
        "id": "CVE-2025-37905-711d58ee",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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        },
        "deprecated": false
    },
    {
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        "signature_version": "v1",
        "signature_type": "Function",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c",
            "function": "scmi_child_dev_find"
        },
        "id": "CVE-2025-37905-7ac549b9",
        "digest": {
            "length": 270.0,
            "function_hash": "173589368963589814136936318906788208942"
        },
        "deprecated": false
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8a8a3547d5c4960da053df49c75bf623827a25da",
        "signature_version": "v1",
        "signature_type": "Line",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c"
        },
        "id": "CVE-2025-37905-7f7bec70",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "132719930387529579451044047165045419594"
            ]
        },
        "deprecated": false
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ff4273d47da81b95ed9396110bcbd1b7b7470fe8",
        "signature_version": "v1",
        "signature_type": "Function",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c",
            "function": "scmi_child_dev_find"
        },
        "id": "CVE-2025-37905-a0932af5",
        "digest": {
            "length": 263.0,
            "function_hash": "250581595955360828278541763981178357954"
        },
        "deprecated": false
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@969d8beaa2e374387bf9aa5602ef84fc50bb48d8",
        "signature_version": "v1",
        "signature_type": "Line",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c"
        },
        "id": "CVE-2025-37905-bf83701c",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "113934855204148702180031971153281648234",
                "152839124533416767428931405999199940994",
                "132719930387529579451044047165045419594"
            ]
        },
        "deprecated": false
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3",
        "signature_version": "v1",
        "signature_type": "Line",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c"
        },
        "id": "CVE-2025-37905-c9445494",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "113934855204148702180031971153281648234",
                "152839124533416767428931405999199940994",
                "132719930387529579451044047165045419594"
            ]
        },
        "deprecated": false
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ff4273d47da81b95ed9396110bcbd1b7b7470fe8",
        "signature_version": "v1",
        "signature_type": "Line",
        "target": {
            "file": "drivers/firmware/arm_scmi/bus.c"
        },
        "id": "CVE-2025-37905-fe926930",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "113934855204148702180031971153281648234",
                "152839124533416767428931405999199940994",
                "262449577750598913306207407018447224833"
            ]
        },
        "deprecated": false
    }
]

Linux / Kernel

Package

Name: Kernel

Affected ranges

Type: ECOSYSTEM
Events: Introduced

5.13.0

Fixed

5.15.182

Type: ECOSYSTEM
Events: Introduced

5.16.0

Fixed

6.1.138

Type: ECOSYSTEM
Events: Introduced

6.2.0

Fixed

6.6.90

Type: ECOSYSTEM
Events: Introduced

6.7.0

Fixed

6.12.28

Type: ECOSYSTEM
Events: Introduced

6.13.0

Fixed

6.14.6