CVE-2025-38437

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-38437
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38437.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-38437
Downstream
Related
Published
2025-07-25T15:27:16Z
Modified
2025-11-03T23:28:05.987908Z
Summary
ksmbd: fix potential use-after-free in oplock/lease break ack
Details

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

ksmbd: fix potential use-after-free in oplock/lease break ack

If ksmbdiovpinrsp return error, use-after-free can happen by accessing opinfo->state and opinfoput and ksmbdfdput could called twice.

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
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
e38ec88a2b42c494601b1213816d75f0b54d9bf0
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
97c355989928a5f60b228ef5266c1be67a46cdf9
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
815f1161d6dbc4c54ccf94b7d3fdeab34b4d7477
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
8106adc21a2270c16abf69cd74ccd7c79c6e7acd
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
50f930db22365738d9387c974416f38a06e8057e

Affected versions

v5.*

v5.13
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
v5.16
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
v6.1.138
v6.1.139
v6.1.14
v6.1.140
v6.1.141
v6.1.142
v6.1.143
v6.1.144
v6.1.145
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
v6.12.28
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
v6.12.4
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
v6.15
v6.15-rc1
v6.15-rc2
v6.15-rc3
v6.15-rc4
v6.15-rc5
v6.15-rc6
v6.15-rc7
v6.15.1
v6.15.2
v6.15.3
v6.15.4
v6.15.5
v6.15.6
v6.16-rc1
v6.16-rc2
v6.16-rc3
v6.16-rc4
v6.16-rc5
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
v6.6.90
v6.6.91
v6.6.92
v6.6.93
v6.6.94
v6.6.95
v6.6.96
v6.6.97
v6.6.98
v6.7
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

[
    {
        "id": "CVE-2025-38437-1da3f2a1",
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e38ec88a2b42c494601b1213816d75f0b54d9bf0",
        "target": {
            "function": "smb20_oplock_break_ack",
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "length": 2973.0,
            "function_hash": "198086827544866369333128113486598587526"
        },
        "signature_version": "v1",
        "deprecated": false
    },
    {
        "id": "CVE-2025-38437-3f3b4fdb",
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8106adc21a2270c16abf69cd74ccd7c79c6e7acd",
        "target": {
            "function": "smb21_lease_break_ack",
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "length": 3178.0,
            "function_hash": "137408625661133045615177144985197304689"
        },
        "signature_version": "v1",
        "deprecated": false
    },
    {
        "id": "CVE-2025-38437-4154f5c6",
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8106adc21a2270c16abf69cd74ccd7c79c6e7acd",
        "target": {
            "function": "smb20_oplock_break_ack",
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "length": 2973.0,
            "function_hash": "198086827544866369333128113486598587526"
        },
        "signature_version": "v1",
        "deprecated": false
    },
    {
        "id": "CVE-2025-38437-5052aa7d",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8106adc21a2270c16abf69cd74ccd7c79c6e7acd",
        "target": {
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "line_hashes": [
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                "104392511059468846963525576415865317046",
                "97852781083258755812580626442052616036",
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                "165038995109213687580979916696446765626",
                "297915876569087580152418238456265592898",
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                "230762231807383258405202843885977594374",
                "332405752555154982167201206038296218529",
                "291339483670371659001863485812294251919",
                "284317903802236644140198332708149631108",
                "177478162684567295183630099335726893108",
                "319036359716570830132194024264136682272",
                "249732016330184989345822299343714584911",
                "251862043613357336797586067068402483143",
                "276987712582508273086044314572868650824",
                "241119600252944839744003906244528158919",
                "247275649052744973807475623778900262975",
                "174884142772900062743264729009743938626",
                "184409334995621805258800329385574839475",
                "249542259056878956156294454007331300463",
                "213266885988250428818199269533374931931",
                "107946535020194755991505425382746293287",
                "158698795669103027981647243574262172288",
                "133099674797452787764202668951088822889",
                "177028938562277752215988282445905183894",
                "330975919593098193838106381554954248780",
                "149900274388384279999672728468359924423",
                "20795444043631500687030106237393138310",
                "159762170479660044007899903518200391895",
                "249542259056878956156294454007331300463",
                "200605324469578250004868668538716852973",
                "94912855763638238710424802858297551686",
                "190619103992345199944442574578615379713",
                "61814346300526398470674161880386611265"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "deprecated": false
    },
    {
        "id": "CVE-2025-38437-53457b02",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e38ec88a2b42c494601b1213816d75f0b54d9bf0",
        "target": {
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "line_hashes": [
                "192179625523824840576830020788107439699",
                "104392511059468846963525576415865317046",
                "97852781083258755812580626442052616036",
                "177478162684567295183630099335726893108",
                "165038995109213687580979916696446765626",
                "297915876569087580152418238456265592898",
                "4697371381104559598403192751763662000",
                "126282739277083419892306216155198231523",
                "87111320288821730452234330693860596667",
                "230762231807383258405202843885977594374",
                "332405752555154982167201206038296218529",
                "291339483670371659001863485812294251919",
                "284317903802236644140198332708149631108",
                "177478162684567295183630099335726893108",
                "319036359716570830132194024264136682272",
                "249732016330184989345822299343714584911",
                "251862043613357336797586067068402483143",
                "276987712582508273086044314572868650824",
                "241119600252944839744003906244528158919",
                "247275649052744973807475623778900262975",
                "174884142772900062743264729009743938626",
                "184409334995621805258800329385574839475",
                "249542259056878956156294454007331300463",
                "213266885988250428818199269533374931931",
                "107946535020194755991505425382746293287",
                "158698795669103027981647243574262172288",
                "133099674797452787764202668951088822889",
                "177028938562277752215988282445905183894",
                "330975919593098193838106381554954248780",
                "149900274388384279999672728468359924423",
                "20795444043631500687030106237393138310",
                "159762170479660044007899903518200391895",
                "249542259056878956156294454007331300463",
                "200605324469578250004868668538716852973",
                "94912855763638238710424802858297551686",
                "190619103992345199944442574578615379713",
                "61814346300526398470674161880386611265"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "deprecated": false
    },
    {
        "id": "CVE-2025-38437-5876f242",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@815f1161d6dbc4c54ccf94b7d3fdeab34b4d7477",
        "target": {
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "line_hashes": [
                "192179625523824840576830020788107439699",
                "104392511059468846963525576415865317046",
                "97852781083258755812580626442052616036",
                "177478162684567295183630099335726893108",
                "165038995109213687580979916696446765626",
                "297915876569087580152418238456265592898",
                "4697371381104559598403192751763662000",
                "126282739277083419892306216155198231523",
                "87111320288821730452234330693860596667",
                "230762231807383258405202843885977594374",
                "332405752555154982167201206038296218529",
                "291339483670371659001863485812294251919",
                "284317903802236644140198332708149631108",
                "177478162684567295183630099335726893108",
                "319036359716570830132194024264136682272",
                "249732016330184989345822299343714584911",
                "251862043613357336797586067068402483143",
                "276987712582508273086044314572868650824",
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                "247275649052744973807475623778900262975",
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                "184409334995621805258800329385574839475",
                "249542259056878956156294454007331300463",
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                "107946535020194755991505425382746293287",
                "158698795669103027981647243574262172288",
                "133099674797452787764202668951088822889",
                "177028938562277752215988282445905183894",
                "330975919593098193838106381554954248780",
                "149900274388384279999672728468359924423",
                "20795444043631500687030106237393138310",
                "159762170479660044007899903518200391895",
                "249542259056878956156294454007331300463",
                "200605324469578250004868668538716852973",
                "94912855763638238710424802858297551686",
                "190619103992345199944442574578615379713",
                "61814346300526398470674161880386611265"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "deprecated": false
    },
    {
        "id": "CVE-2025-38437-7e3105b5",
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@815f1161d6dbc4c54ccf94b7d3fdeab34b4d7477",
        "target": {
            "function": "smb20_oplock_break_ack",
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "length": 2973.0,
            "function_hash": "198086827544866369333128113486598587526"
        },
        "signature_version": "v1",
        "deprecated": false
    },
    {
        "id": "CVE-2025-38437-80d1951b",
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@815f1161d6dbc4c54ccf94b7d3fdeab34b4d7477",
        "target": {
            "function": "smb21_lease_break_ack",
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "length": 3178.0,
            "function_hash": "137408625661133045615177144985197304689"
        },
        "signature_version": "v1",
        "deprecated": false
    },
    {
        "id": "CVE-2025-38437-cec75b72",
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e38ec88a2b42c494601b1213816d75f0b54d9bf0",
        "target": {
            "function": "smb21_lease_break_ack",
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "length": 3178.0,
            "function_hash": "137408625661133045615177144985197304689"
        },
        "signature_version": "v1",
        "deprecated": false
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.15.0
Fixed
6.1.146
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.99
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.39
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.15.7