CVE-2025-37924

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-37924
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-37924.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-37924
Downstream
Related
Published
2025-05-20T15:21:52Z
Modified
2025-10-18T01:39:31.102883Z
Summary
ksmbd: fix use-after-free in kerberos authentication
Details

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

ksmbd: fix use-after-free in kerberos authentication

Setting sess->user = NULL was introduced to fix the dangling pointer created by ksmbdfreeuser. However, it is possible another thread could be operating on the session and make use of sess->user after it has been passed to ksmbdfreeuser but before sess->user is set to NULL.

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
e34a33d5d7e87399af0a138bb32f6a3e95dd83d2
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
b447463562238428503cfba1c913261047772f90
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
e18c616718018dfc440e4a2d2b94e28fe91b1861
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
28c756738af44a404a91b77830d017bb0c525890
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
e86e9134e1d1c90a960dd57f59ce574d27b9a124

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
v6.1.14
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
v6.15-rc2
v6.15-rc3
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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        "signature_version": "v1",
        "id": "CVE-2025-37924-a76e8d16",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e34a33d5d7e87399af0a138bb32f6a3e95dd83d2",
        "target": {
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "280745818913029643744135149523925208183",
                "327650182956936254732796545596091959739",
                "91769291336642833705789051165104268716",
                "301515902354641430776219862987323526491",
                "124399000242636710911643134908365994035",
                "302074125069825132387978801546696581901",
                "265911875570917344135900770152013189327"
            ]
        },
        "signature_type": "Line",
        "deprecated": false
    },
    {
        "signature_version": "v1",
        "id": "CVE-2025-37924-c582196e",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e86e9134e1d1c90a960dd57f59ce574d27b9a124",
        "target": {
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "280745818913029643744135149523925208183",
                "327650182956936254732796545596091959739",
                "91769291336642833705789051165104268716",
                "301515902354641430776219862987323526491",
                "124399000242636710911643134908365994035",
                "302074125069825132387978801546696581901",
                "265911875570917344135900770152013189327"
            ]
        },
        "signature_type": "Line",
        "deprecated": false
    },
    {
        "signature_version": "v1",
        "id": "CVE-2025-37924-da244b76",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b447463562238428503cfba1c913261047772f90",
        "target": {
            "file": "fs/smb/server/smb2pdu.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "280745818913029643744135149523925208183",
                "327650182956936254732796545596091959739",
                "91769291336642833705789051165104268716",
                "301515902354641430776219862987323526491",
                "124399000242636710911643134908365994035",
                "302074125069825132387978801546696581901",
                "265911875570917344135900770152013189327"
            ]
        },
        "signature_type": "Line",
        "deprecated": false
    },
    {
        "signature_version": "v1",
        "id": "CVE-2025-37924-e8674d50",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e18c616718018dfc440e4a2d2b94e28fe91b1861",
        "target": {
            "file": "fs/smb/server/auth.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "193258458289642707122771098769503392664",
                "130155555021591034844809652521199101578",
                "288581325110701309687898215775955852176",
                "264253750991611780540347122212521104558"
            ]
        },
        "signature_type": "Line",
        "deprecated": false
    },
    {
        "signature_version": "v1",
        "id": "CVE-2025-37924-eb3f76bd",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e18c616718018dfc440e4a2d2b94e28fe91b1861",
        "target": {
            "file": "fs/smb/server/smb2pdu.c",
            "function": "krb5_authenticate"
        },
        "digest": {
            "function_hash": "253574738412426105467410235792029598833",
            "length": 2006.0
        },
        "signature_type": "Function",
        "deprecated": false
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.15.0
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