CVE-2022-50042

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-50042
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50042.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-50042
Downstream
Published
2025-06-18T11:01:43Z
Modified
2025-10-15T01:13:27.284351Z
Summary
net: genl: fix error path memory leak in policy dumping
Details

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

net: genl: fix error path memory leak in policy dumping

If construction of the array of policies fails when recording non-first policy we need to unwind.

netlinkpolicydumpaddpolicy() itself also needs fixing as it currently gives up on error without recording the allocated pointer in the pstate pointer.

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
50a896cf2d6f34e884a00139d6e6012c9833ace3
Fixed
83411c9f05d5a8b637293b3389eca3d378197c04
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
50a896cf2d6f34e884a00139d6e6012c9833ace3
Fixed
b0672895d8be5d19d4b05ac83f807026fc791037
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
50a896cf2d6f34e884a00139d6e6012c9833ace3
Fixed
26b6acd365823e99e46be3b27500f5dc235dda5e
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
50a896cf2d6f34e884a00139d6e6012c9833ace3
Fixed
249801360db3dec4f73768c502192020bfddeacc

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
v5.10.137
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
v5.15.61
v5.15.62
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
v5.19
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
v5.19.2
v5.19.3
v5.9
v5.9-rc7
v5.9-rc8

Database specific 

{
    "vanir_signatures": [
        {
            "deprecated": false,
            "signature_type": "Function",
            "target": {
                "file": "net/netlink/policy.c",
                "function": "netlink_policy_dump_add_policy"
            },
            "id": "CVE-2022-50042-1c3e2393",
            "digest": {
                "length": 754.0,
                "function_hash": "305556549993886244477461836730331318335"
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@249801360db3dec4f73768c502192020bfddeacc"
        },
        {
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "net/netlink/genetlink.c"
            },
            "id": "CVE-2022-50042-43b8c113",
            "digest": {
                "line_hashes": [
                    "104405332519522960522439745017264608630",
                    "330827633552781395785645289028442670775",
                    "78828392896317485488953111243907561258",
                    "103894786242483208151408445583131786212",
                    "218173652574822278898408317402945793684",
                    "234369273626214188867881054735990380433",
                    "136840179919294046460941863803174258763",
                    "296268050310514704308426655253464840444",
                    "120842118024458241526956197138102288531"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b0672895d8be5d19d4b05ac83f807026fc791037"
        },
        {
            "deprecated": false,
            "signature_type": "Function",
            "target": {
                "file": "net/netlink/genetlink.c",
                "function": "ctrl_dumppolicy_start"
            },
            "id": "CVE-2022-50042-48bd6366",
            "digest": {
                "length": 1267.0,
                "function_hash": "299671361865052203314367329275578245462"
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@26b6acd365823e99e46be3b27500f5dc235dda5e"
        },
        {
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "net/netlink/policy.c"
            },
            "id": "CVE-2022-50042-52e23fc6",
            "digest": {
                "line_hashes": [
                    "129394455275853235221980196863476590642",
                    "207602487379929423731856322504554247890",
                    "295141010400994329605078787532009737871",
                    "83707521468154069361295857602898231252",
                    "55586657440026488025102591930392608508",
                    "298491033842692856838932624633538255226",
                    "143831625909857302181186419570827105396",
                    "112721398578729193083765879074641731005",
                    "191525638188066204191583534096652753818",
                    "331237305056096458384075482638222034572",
                    "16757891077220897957032267244961969590",
                    "271991315649067351396350487086253146876"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@26b6acd365823e99e46be3b27500f5dc235dda5e"
        },
        {
            "deprecated": false,
            "signature_type": "Function",
            "target": {
                "file": "net/netlink/policy.c",
                "function": "netlink_policy_dump_add_policy"
            },
            "id": "CVE-2022-50042-5737bd05",
            "digest": {
                "length": 754.0,
                "function_hash": "305556549993886244477461836730331318335"
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@83411c9f05d5a8b637293b3389eca3d378197c04"
        },
        {
            "deprecated": false,
            "signature_type": "Function",
            "target": {
                "file": "net/netlink/genetlink.c",
                "function": "ctrl_dumppolicy_start"
            },
            "id": "CVE-2022-50042-699f77a9",
            "digest": {
                "length": 1267.0,
                "function_hash": "299671361865052203314367329275578245462"
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@83411c9f05d5a8b637293b3389eca3d378197c04"
        },
        {
            "deprecated": false,
            "signature_type": "Function",
            "target": {
                "file": "net/netlink/genetlink.c",
                "function": "ctrl_dumppolicy_start"
            },
            "id": "CVE-2022-50042-6f4ec810",
            "digest": {
                "length": 1267.0,
                "function_hash": "299671361865052203314367329275578245462"
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@249801360db3dec4f73768c502192020bfddeacc"
        },
        {
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "net/netlink/genetlink.c"
            },
            "id": "CVE-2022-50042-7060222c",
            "digest": {
                "line_hashes": [
                    "104405332519522960522439745017264608630",
                    "330827633552781395785645289028442670775",
                    "78828392896317485488953111243907561258",
                    "103894786242483208151408445583131786212",
                    "218173652574822278898408317402945793684",
                    "234369273626214188867881054735990380433",
                    "136840179919294046460941863803174258763",
                    "296268050310514704308426655253464840444",
                    "120842118024458241526956197138102288531"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@26b6acd365823e99e46be3b27500f5dc235dda5e"
        },
        {
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "net/netlink/policy.c"
            },
            "id": "CVE-2022-50042-845f1185",
            "digest": {
                "line_hashes": [
                    "129394455275853235221980196863476590642",
                    "207602487379929423731856322504554247890",
                    "295141010400994329605078787532009737871",
                    "83707521468154069361295857602898231252",
                    "55586657440026488025102591930392608508",
                    "298491033842692856838932624633538255226",
                    "143831625909857302181186419570827105396",
                    "112721398578729193083765879074641731005",
                    "191525638188066204191583534096652753818",
                    "331237305056096458384075482638222034572",
                    "16757891077220897957032267244961969590",
                    "271991315649067351396350487086253146876"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@83411c9f05d5a8b637293b3389eca3d378197c04"
        },
        {
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "net/netlink/policy.c"
            },
            "id": "CVE-2022-50042-928796d6",
            "digest": {
                "line_hashes": [
                    "129394455275853235221980196863476590642",
                    "207602487379929423731856322504554247890",
                    "295141010400994329605078787532009737871",
                    "83707521468154069361295857602898231252",
                    "55586657440026488025102591930392608508",
                    "298491033842692856838932624633538255226",
                    "143831625909857302181186419570827105396",
                    "112721398578729193083765879074641731005",
                    "191525638188066204191583534096652753818",
                    "331237305056096458384075482638222034572",
                    "16757891077220897957032267244961969590",
                    "271991315649067351396350487086253146876"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@249801360db3dec4f73768c502192020bfddeacc"
        },
        {
            "deprecated": false,
            "signature_type": "Function",
            "target": {
                "file": "net/netlink/policy.c",
                "function": "netlink_policy_dump_add_policy"
            },
            "id": "CVE-2022-50042-a1a41706",
            "digest": {
                "length": 754.0,
                "function_hash": "305556549993886244477461836730331318335"
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b0672895d8be5d19d4b05ac83f807026fc791037"
        },
        {
            "deprecated": false,
            "signature_type": "Function",
            "target": {
                "file": "net/netlink/genetlink.c",
                "function": "ctrl_dumppolicy_start"
            },
            "id": "CVE-2022-50042-a6169556",
            "digest": {
                "length": 1267.0,
                "function_hash": "299671361865052203314367329275578245462"
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b0672895d8be5d19d4b05ac83f807026fc791037"
        },
        {
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "net/netlink/genetlink.c"
            },
            "id": "CVE-2022-50042-b8542873",
            "digest": {
                "line_hashes": [
                    "104405332519522960522439745017264608630",
                    "330827633552781395785645289028442670775",
                    "78828392896317485488953111243907561258",
                    "103894786242483208151408445583131786212",
                    "218173652574822278898408317402945793684",
                    "234369273626214188867881054735990380433",
                    "136840179919294046460941863803174258763",
                    "296268050310514704308426655253464840444",
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                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@83411c9f05d5a8b637293b3389eca3d378197c04"
        },
        {
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "net/netlink/policy.c"
            },
            "id": "CVE-2022-50042-e66cef86",
            "digest": {
                "line_hashes": [
                    "129394455275853235221980196863476590642",
                    "207602487379929423731856322504554247890",
                    "295141010400994329605078787532009737871",
                    "83707521468154069361295857602898231252",
                    "55586657440026488025102591930392608508",
                    "298491033842692856838932624633538255226",
                    "143831625909857302181186419570827105396",
                    "112721398578729193083765879074641731005",
                    "191525638188066204191583534096652753818",
                    "331237305056096458384075482638222034572",
                    "16757891077220897957032267244961969590",
                    "271991315649067351396350487086253146876"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b0672895d8be5d19d4b05ac83f807026fc791037"
        },
        {
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "net/netlink/genetlink.c"
            },
            "id": "CVE-2022-50042-ebf627ab",
            "digest": {
                "line_hashes": [
                    "104405332519522960522439745017264608630",
                    "330827633552781395785645289028442670775",
                    "78828392896317485488953111243907561258",
                    "103894786242483208151408445583131786212",
                    "218173652574822278898408317402945793684",
                    "234369273626214188867881054735990380433",
                    "136840179919294046460941863803174258763",
                    "296268050310514704308426655253464840444",
                    "120842118024458241526956197138102288531"
                ],
                "threshold": 0.9
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@249801360db3dec4f73768c502192020bfddeacc"
        },
        {
            "deprecated": false,
            "signature_type": "Function",
            "target": {
                "file": "net/netlink/policy.c",
                "function": "netlink_policy_dump_add_policy"
            },
            "id": "CVE-2022-50042-ece02c0c",
            "digest": {
                "length": 754.0,
                "function_hash": "305556549993886244477461836730331318335"
            },
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@26b6acd365823e99e46be3b27500f5dc235dda5e"
        }
    ]
}

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.10.0
Fixed
5.10.138
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.63
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
5.19.4