CVE-2022-50131
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-50131
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50131.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-50131
- Downstream
- Related
- Published
- 2025-06-18T11:02:56Z
- Modified
- 2025-10-21T12:31:58.985376Z
- Summary
- HID: mcp2221: prevent a buffer overflow in mcp_smbus_write()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
HID: mcp2221: prevent a buffer overflow in mcpsmbuswrite()
Smatch Warning: drivers/hid/hid-mcp2221.c:388 mcpsmbuswrite() error: _memcpy() '&mcp->txbuf[5]' too small (59 vs 255) drivers/hid/hid-mcp2221.c:388 mcpsmbuswrite() error: _memcpy() 'buf' too small (34 vs 255)
The 'len' variable can take a value between 0-255 as it can come from data->block[0] and it is user data. So add an bound check to prevent a buffer overflow in memcpy().
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270
- https://git.kernel.org/stable/c/62ac2473553a00229e67bdf3cb023b62cf7f5a9a
- https://git.kernel.org/stable/c/6402116a7b5ec80fa40fd145a80c813019cd555f
- https://git.kernel.org/stable/c/66c8e816f2f2ca4a61b406503bd10bad1b35f72f
- https://git.kernel.org/stable/c/91443c669d280937968f0aa4edefa741cfe35314
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
-
Introduced67a95c21463d066060b0f66d65a75d45bb386ffbFixed66c8e816f2f2ca4a61b406503bd10bad1b35f72f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced67a95c21463d066060b0f66d65a75d45bb386ffbFixed91443c669d280937968f0aa4edefa741cfe35314
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced67a95c21463d066060b0f66d65a75d45bb386ffbFixed6402116a7b5ec80fa40fd145a80c813019cd555f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced67a95c21463d066060b0f66d65a75d45bb386ffbFixed3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced67a95c21463d066060b0f66d65a75d45bb386ffbFixed62ac2473553a00229e67bdf3cb023b62cf7f5a9a
Affected versions
v5.*
v5.10
v5.10-rc1
v5.10-rc2
v5.10-rc3
v5.10-rc4
v5.10-rc5
v5.10-rc6
v5.10-rc7
v5.10.1
v5.10.10
v5.10.100
v5.10.101
v5.10.102
v5.10.103
v5.10.104
v5.10.105
v5.10.106
v5.10.107
v5.10.108
v5.10.109
v5.10.11
v5.10.110
v5.10.111
v5.10.112
v5.10.113
v5.10.114
v5.10.115
v5.10.116
v5.10.117
v5.10.118
v5.10.119
v5.10.12
v5.10.120
v5.10.121
v5.10.122
v5.10.123
v5.10.124
v5.10.125
v5.10.126
v5.10.127
v5.10.128
v5.10.129
v5.10.13
v5.10.130
v5.10.131
v5.10.132
v5.10.133
v5.10.134
v5.10.135
v5.10.136
v5.10.14
v5.10.15
v5.10.16
v5.10.17
v5.10.18
v5.10.19
v5.10.2
v5.10.20
v5.10.21
v5.10.22
v5.10.23
v5.10.24
v5.10.25
v5.10.26
v5.10.27
v5.10.28
v5.10.29
v5.10.3
v5.10.30
v5.10.31
v5.10.32
v5.10.33
v5.10.34
v5.10.35
v5.10.36
v5.10.37
v5.10.38
v5.10.39
v5.10.4
v5.10.40
v5.10.41
v5.10.42
v5.10.43
v5.10.44
v5.10.45
v5.10.46
v5.10.47
v5.10.48
v5.10.49
v5.10.5
v5.10.50
v5.10.51
v5.10.52
v5.10.53
v5.10.54
v5.10.55
v5.10.56
v5.10.57
v5.10.58
v5.10.59
v5.10.6
v5.10.60
v5.10.61
v5.10.62
v5.10.63
v5.10.64
v5.10.65
v5.10.66
v5.10.67
v5.10.68
v5.10.69
v5.10.7
v5.10.70
v5.10.71
v5.10.72
v5.10.73
v5.10.74
v5.10.75
v5.10.76
v5.10.77
v5.10.78
v5.10.79
v5.10.8
v5.10.80
v5.10.81
v5.10.82
v5.10.83
v5.10.84
v5.10.85
v5.10.86
v5.10.87
v5.10.88
v5.10.89
v5.10.9
v5.10.90
v5.10.91
v5.10.92
v5.10.93
v5.10.94
v5.10.95
v5.10.96
v5.10.97
v5.10.98
v5.10.99
v5.11
v5.11-rc1
v5.11-rc2
v5.11-rc3
v5.11-rc4
v5.11-rc5
v5.11-rc6
v5.11-rc7
v5.12
v5.12-rc1
v5.12-rc1-dontuse
v5.12-rc2
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
v5.15.11
v5.15.12
v5.15.13
v5.15.14
v5.15.15
v5.15.16
v5.15.17
v5.15.18
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
v5.15.7
v5.15.8
v5.15.9
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
v5.18.1
v5.18.10
v5.18.11
v5.18.12
v5.18.13
v5.18.14
v5.18.15
v5.18.16
v5.18.17
v5.18.2
v5.18.3
v5.18.4
v5.18.5
v5.18.6
v5.18.7
v5.18.8
v5.18.9
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
v5.19.1
v5.6
v5.6-rc4
v5.6-rc5
v5.6-rc6
v5.6-rc7
v5.7
v5.7-rc1
v5.7-rc2
v5.7-rc3
v5.7-rc4
v5.7-rc5
v5.7-rc6
v5.7-rc7
v5.8
v5.8-rc1
v5.8-rc2
v5.8-rc3
v5.8-rc4
v5.8-rc5
v5.8-rc6
v5.8-rc7
v5.9
v5.9-rc1
v5.9-rc2
v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8
Database specific
vanir_signatures
[
{
"deprecated": false,
"id": "CVE-2022-50131-0d908a6a",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@91443c669d280937968f0aa4edefa741cfe35314",
"signature_version": "v1",
"target": {
"function": "mcp_smbus_write",
"file": "drivers/hid/hid-mcp2221.c"
},
"signature_type": "Function",
"digest": {
"function_hash": "198621753067792624457583356652414422842",
"length": 797.0
}
},
{
"deprecated": false,
"id": "CVE-2022-50131-28685978",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270",
"signature_version": "v1",
"target": {
"file": "drivers/hid/hid-mcp2221.c"
},
"signature_type": "Line",
"digest": {
"line_hashes": [
"214419528541379547753149763901952009615",
"68750295198199607859693821514425497132",
"96396273200669108230001852341589087190",
"43721984344197467956697002405070748855"
],
"threshold": 0.9
}
},
{
"deprecated": false,
"id": "CVE-2022-50131-2bd53b04",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@62ac2473553a00229e67bdf3cb023b62cf7f5a9a",
"signature_version": "v1",
"target": {
"function": "mcp_smbus_write",
"file": "drivers/hid/hid-mcp2221.c"
},
"signature_type": "Function",
"digest": {
"function_hash": "198621753067792624457583356652414422842",
"length": 797.0
}
},
{
"deprecated": false,
"id": "CVE-2022-50131-47230633",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270",
"signature_version": "v1",
"target": {
"function": "mcp_smbus_write",
"file": "drivers/hid/hid-mcp2221.c"
},
"signature_type": "Function",
"digest": {
"function_hash": "198621753067792624457583356652414422842",
"length": 797.0
}
},
{
"deprecated": false,
"id": "CVE-2022-50131-b666d4cd",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6402116a7b5ec80fa40fd145a80c813019cd555f",
"signature_version": "v1",
"target": {
"file": "drivers/hid/hid-mcp2221.c"
},
"signature_type": "Line",
"digest": {
"line_hashes": [
"214419528541379547753149763901952009615",
"68750295198199607859693821514425497132",
"96396273200669108230001852341589087190",
"43721984344197467956697002405070748855"
],
"threshold": 0.9
}
},
{
"deprecated": false,
"id": "CVE-2022-50131-b72880a3",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@66c8e816f2f2ca4a61b406503bd10bad1b35f72f",
"signature_version": "v1",
"target": {
"file": "drivers/hid/hid-mcp2221.c"
},
"signature_type": "Line",
"digest": {
"line_hashes": [
"214419528541379547753149763901952009615",
"68750295198199607859693821514425497132",
"96396273200669108230001852341589087190",
"43721984344197467956697002405070748855"
],
"threshold": 0.9
}
},
{
"deprecated": false,
"id": "CVE-2022-50131-db355b00",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@91443c669d280937968f0aa4edefa741cfe35314",
"signature_version": "v1",
"target": {
"file": "drivers/hid/hid-mcp2221.c"
},
"signature_type": "Line",
"digest": {
"line_hashes": [
"214419528541379547753149763901952009615",
"68750295198199607859693821514425497132",
"96396273200669108230001852341589087190",
"43721984344197467956697002405070748855"
],
"threshold": 0.9
}
},
{
"deprecated": false,
"id": "CVE-2022-50131-dbd57d26",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6402116a7b5ec80fa40fd145a80c813019cd555f",
"signature_version": "v1",
"target": {
"function": "mcp_smbus_write",
"file": "drivers/hid/hid-mcp2221.c"
},
"signature_type": "Function",
"digest": {
"function_hash": "198621753067792624457583356652414422842",
"length": 797.0
}
},
{
"deprecated": false,
"id": "CVE-2022-50131-dff5ed63",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@66c8e816f2f2ca4a61b406503bd10bad1b35f72f",
"signature_version": "v1",
"target": {
"function": "mcp_smbus_write",
"file": "drivers/hid/hid-mcp2221.c"
},
"signature_type": "Function",
"digest": {
"function_hash": "198621753067792624457583356652414422842",
"length": 797.0
}
},
{
"deprecated": false,
"id": "CVE-2022-50131-ea3e2d3d",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@62ac2473553a00229e67bdf3cb023b62cf7f5a9a",
"signature_version": "v1",
"target": {
"file": "drivers/hid/hid-mcp2221.c"
},
"signature_type": "Line",
"digest": {
"line_hashes": [
"214419528541379547753149763901952009615",
"68750295198199607859693821514425497132",
"96396273200669108230001852341589087190",
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],
"threshold": 0.9
}
}
]