CVE-2025-37947
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-37947
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37947.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-37947
- Downstream
- Related
- Published
- 2025-05-20T16:01:43Z
- Modified
- 2025-10-22T11:08:05.581186Z
- Summary
- ksmbd: prevent out-of-bounds stream writes by validating *pos
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: prevent out-of-bounds stream writes by validating *pos
ksmbdvfsstreamwrite() did not validate whether the write offset (*pos) was within the bounds of the existing stream data length (vlen). If *pos was greater than or equal to v_len, this could lead to an out-of-bounds memory write.
This patch adds a check to ensure *pos is less than v_len before proceeding. If the condition fails, -EINVAL is returned.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/04c8a38c60346bb5a7c49b276de7233f703ce9cb
- https://git.kernel.org/stable/c/0ca6df4f40cf4c32487944aaf48319cb6c25accc
- https://git.kernel.org/stable/c/7f61da79df86fd140c7768e668ad846bfa7ec8e1
- https://git.kernel.org/stable/c/d62ba16563a86aae052f96d270b3b6f78fca154c
- https://git.kernel.org/stable/c/e6356499fd216ed6343ae0363f4c9303f02c5034
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
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed7f61da79df86fd140c7768e668ad846bfa7ec8e1
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed04c8a38c60346bb5a7c49b276de7233f703ce9cb
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixedd62ba16563a86aae052f96d270b3b6f78fca154c
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixede6356499fd216ed6343ae0363f4c9303f02c5034
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed0ca6df4f40cf4c32487944aaf48319cb6c25accc
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
v6.1.14
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
v6.12.28
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
v6.14.6
v6.15-rc1
v6.15-rc2
v6.15-rc3
v6.15-rc4
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
v6.7
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@04c8a38c60346bb5a7c49b276de7233f703ce9cb",
"target": {
"function": "ksmbd_vfs_stream_write",
"file": "fs/smb/server/vfs.c"
},
"id": "CVE-2025-37947-06e3665d",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "4414967034085953649716315198658764179",
"length": 1080.0
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d62ba16563a86aae052f96d270b3b6f78fca154c",
"target": {
"function": "ksmbd_vfs_stream_write",
"file": "fs/smb/server/vfs.c"
},
"id": "CVE-2025-37947-0c35e6d9",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "333727666911083657640986741974909119592",
"length": 1087.0
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0ca6df4f40cf4c32487944aaf48319cb6c25accc",
"target": {
"file": "fs/smb/server/vfs.c"
},
"id": "CVE-2025-37947-2c0f827b",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"109401113662066539742496945239834615858",
"325721914804935686583886970965963329844",
"295506648716598103693107985729893290039"
],
"threshold": 0.9
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0ca6df4f40cf4c32487944aaf48319cb6c25accc",
"target": {
"function": "ksmbd_vfs_stream_write",
"file": "fs/smb/server/vfs.c"
},
"id": "CVE-2025-37947-3729e742",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "333727666911083657640986741974909119592",
"length": 1087.0
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d62ba16563a86aae052f96d270b3b6f78fca154c",
"target": {
"file": "fs/smb/server/vfs.c"
},
"id": "CVE-2025-37947-788f3c62",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"109401113662066539742496945239834615858",
"325721914804935686583886970965963329844",
"295506648716598103693107985729893290039"
],
"threshold": 0.9
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e6356499fd216ed6343ae0363f4c9303f02c5034",
"target": {
"function": "ksmbd_vfs_stream_write",
"file": "fs/smb/server/vfs.c"
},
"id": "CVE-2025-37947-7d1b21ba",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "333727666911083657640986741974909119592",
"length": 1087.0
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@04c8a38c60346bb5a7c49b276de7233f703ce9cb",
"target": {
"file": "fs/smb/server/vfs.c"
},
"id": "CVE-2025-37947-7fe2afa3",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"109401113662066539742496945239834615858",
"145558672019358143397609204463115576182",
"154838884528580057766321015558248699172"
],
"threshold": 0.9
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e6356499fd216ed6343ae0363f4c9303f02c5034",
"target": {
"file": "fs/smb/server/vfs.c"
},
"id": "CVE-2025-37947-8560f5fd",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"109401113662066539742496945239834615858",
"325721914804935686583886970965963329844",
"295506648716598103693107985729893290039"
],
"threshold": 0.9
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@7f61da79df86fd140c7768e668ad846bfa7ec8e1",
"target": {
"function": "ksmbd_vfs_stream_write",
"file": "fs/smb/server/vfs.c"
},
"id": "CVE-2025-37947-87bb205f",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "4414967034085953649716315198658764179",
"length": 1080.0
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@7f61da79df86fd140c7768e668ad846bfa7ec8e1",
"target": {
"file": "fs/smb/server/vfs.c"
},
"id": "CVE-2025-37947-8b5a9eca",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"109401113662066539742496945239834615858",
"145558672019358143397609204463115576182",
"154838884528580057766321015558248699172"
],
"threshold": 0.9
}
}
]