CVE-2025-40084
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-40084
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40084.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-40084
- Downstream
- Published
- 2025-10-29T13:37:03Z
- Modified
- 2025-11-03T03:57:47.086393Z
- Summary
- ksmbd: transport_ipc: validate payload size before reading handle
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: transport_ipc: validate payload size before reading handle
handle_response() dereferences the payload as a 4-byte handle without verifying that the declared payload size is at least 4 bytes. A malformed or truncated message from ksmbd.mountd can lead to a 4-byte read past the declared payload size. Validate the size before dereferencing.
This is a minimal fix to guard the initial handle read.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/2dc125f5da134c0915a840b62565c60a595673dd
- https://git.kernel.org/stable/c/6f40e50ceb99fc8ef37e5c56e2ec1d162733fef0
- https://git.kernel.org/stable/c/867ffd9d67285612da3f0498ca618297f8e41f01
- https://git.kernel.org/stable/c/898d527ed94c19980a4d848f10057f1fed578ffb
- https://git.kernel.org/stable/c/a02e432d5130da4c723aabe1205bac805889fdb2
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
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixeda02e432d5130da4c723aabe1205bac805889fdb2
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed2dc125f5da134c0915a840b62565c60a595673dd
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed898d527ed94c19980a4d848f10057f1fed578ffb
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed867ffd9d67285612da3f0498ca618297f8e41f01
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed6f40e50ceb99fc8ef37e5c56e2ec1d162733fef0
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
v6.1.146
v6.1.147
v6.1.148
v6.1.149
v6.1.15
v6.1.150
v6.1.151
v6.1.152
v6.1.153
v6.1.154
v6.1.155
v6.1.156
v6.1.157
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
v6.12.39
v6.12.4
v6.12.40
v6.12.41
v6.12.42
v6.12.43
v6.12.44
v6.12.45
v6.12.46
v6.12.47
v6.12.48
v6.12.49
v6.12.5
v6.12.50
v6.12.51
v6.12.52
v6.12.53
v6.12.54
v6.12.55
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
v6.16
v6.16-rc1
v6.16-rc2
v6.16-rc3
v6.16-rc4
v6.16-rc5
v6.16-rc6
v6.16-rc7
v6.17
v6.17-rc1
v6.17-rc2
v6.17-rc3
v6.17-rc4
v6.17-rc5
v6.17-rc6
v6.17-rc7
v6.17.1
v6.17.2
v6.17.3
v6.17.4
v6.17.5
v6.18-rc1
v6.18-rc2
v6.18-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
v6.6.100
v6.6.101
v6.6.102
v6.6.103
v6.6.104
v6.6.105
v6.6.106
v6.6.107
v6.6.108
v6.6.109
v6.6.11
v6.6.110
v6.6.111
v6.6.112
v6.6.113
v6.6.114
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
v6.6.99
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@6f40e50ceb99fc8ef37e5c56e2ec1d162733fef0",
"signature_version": "v1",
"id": "CVE-2025-40084-1127c5d7",
"signature_type": "Function",
"digest": {
"function_hash": "94180540429871767856034728263758322225",
"length": 755.0
},
"deprecated": false,
"target": {
"function": "handle_response",
"file": "fs/smb/server/transport_ipc.c"
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2dc125f5da134c0915a840b62565c60a595673dd",
"signature_version": "v1",
"id": "CVE-2025-40084-19aceac5",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"261485748337029398611636520735484848735",
"282445973346458296835042765118841765915",
"258245638217033735752425007578446998771",
"83609258614457560366567746051254877586",
"131591686977374908973197085457020095966",
"179357488008043196293616664111239607201"
]
},
"deprecated": false,
"target": {
"file": "fs/smb/server/transport_ipc.c"
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@898d527ed94c19980a4d848f10057f1fed578ffb",
"signature_version": "v1",
"id": "CVE-2025-40084-2a874f28",
"signature_type": "Function",
"digest": {
"function_hash": "94180540429871767856034728263758322225",
"length": 755.0
},
"deprecated": false,
"target": {
"function": "handle_response",
"file": "fs/smb/server/transport_ipc.c"
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@867ffd9d67285612da3f0498ca618297f8e41f01",
"signature_version": "v1",
"id": "CVE-2025-40084-536b0eeb",
"signature_type": "Function",
"digest": {
"function_hash": "94180540429871767856034728263758322225",
"length": 755.0
},
"deprecated": false,
"target": {
"function": "handle_response",
"file": "fs/smb/server/transport_ipc.c"
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@898d527ed94c19980a4d848f10057f1fed578ffb",
"signature_version": "v1",
"id": "CVE-2025-40084-9447d36e",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"261485748337029398611636520735484848735",
"282445973346458296835042765118841765915",
"258245638217033735752425007578446998771",
"83609258614457560366567746051254877586",
"131591686977374908973197085457020095966",
"179357488008043196293616664111239607201"
]
},
"deprecated": false,
"target": {
"file": "fs/smb/server/transport_ipc.c"
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a02e432d5130da4c723aabe1205bac805889fdb2",
"signature_version": "v1",
"id": "CVE-2025-40084-9e348406",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"261485748337029398611636520735484848735",
"282445973346458296835042765118841765915",
"258245638217033735752425007578446998771",
"83609258614457560366567746051254877586",
"131591686977374908973197085457020095966",
"179357488008043196293616664111239607201"
]
},
"deprecated": false,
"target": {
"file": "fs/smb/server/transport_ipc.c"
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6f40e50ceb99fc8ef37e5c56e2ec1d162733fef0",
"signature_version": "v1",
"id": "CVE-2025-40084-9e6f8b92",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"261485748337029398611636520735484848735",
"282445973346458296835042765118841765915",
"258245638217033735752425007578446998771",
"83609258614457560366567746051254877586",
"131591686977374908973197085457020095966",
"179357488008043196293616664111239607201"
]
},
"deprecated": false,
"target": {
"file": "fs/smb/server/transport_ipc.c"
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a02e432d5130da4c723aabe1205bac805889fdb2",
"signature_version": "v1",
"id": "CVE-2025-40084-a5e837c9",
"signature_type": "Function",
"digest": {
"function_hash": "206649881861069596488403617481245320097",
"length": 748.0
},
"deprecated": false,
"target": {
"function": "handle_response",
"file": "fs/smb/server/transport_ipc.c"
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2dc125f5da134c0915a840b62565c60a595673dd",
"signature_version": "v1",
"id": "CVE-2025-40084-bb7e725e",
"signature_type": "Function",
"digest": {
"function_hash": "206649881861069596488403617481245320097",
"length": 748.0
},
"deprecated": false,
"target": {
"function": "handle_response",
"file": "fs/smb/server/transport_ipc.c"
}
},
{
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@867ffd9d67285612da3f0498ca618297f8e41f01",
"signature_version": "v1",
"id": "CVE-2025-40084-d2e400ef",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"261485748337029398611636520735484848735",
"282445973346458296835042765118841765915",
"258245638217033735752425007578446998771",
"83609258614457560366567746051254877586",
"131591686977374908973197085457020095966",
"179357488008043196293616664111239607201"
]
},
"deprecated": false,
"target": {
"file": "fs/smb/server/transport_ipc.c"
}
}
]