CVE-2024-42318
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-42318
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-42318.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-42318
- Downstream
- Related
- Published
- 2024-08-17T09:09:31Z
- Modified
- 2025-10-14T21:27:48.000091Z
- Summary
- landlock: Don't lose track of restrictions on cred_transfer
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
landlock: Don't lose track of restrictions on cred_transfer
When a process' cred struct is replaced, this almost always invokes the credprepare LSM hook; but in one special case (when KEYCTLSESSIONTOPARENT updates the parent's credentials), the credtransfer LSM hook is used instead. Landlock only implements the credprepare hook, not credtransfer, so KEYCTLSESSIONTOPARENT causes all information on Landlock restrictions to be lost.
This basically means that a process with the ability to use the fork() and keyctl() syscalls can get rid of all Landlock restrictions on itself.
Fix it by adding a credtransfer hook that does the same thing as the existing credprepare hook. (Implemented by having hookcredprepare() call hookcredtransfer() so that the two functions are less likely to accidentally diverge in the future.)
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- http://www.openwall.com/lists/oss-security/2024/08/17/2
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2566
- https://git.kernel.org/stable/c/0d74fd54db0bd0c0c224bef0da8fc95ea9c9f36c
- https://git.kernel.org/stable/c/16896914bace82d7811c62f3b6d5320132384f49
- https://git.kernel.org/stable/c/39705a6c29f8a2b93cf5b99528a55366c50014d1
- https://git.kernel.org/stable/c/916c648323fa53b89eedb34a0988ddaf01406117
- https://git.kernel.org/stable/c/b14cc2cf313bd29056fadbc8ecd7f957cf5791ff
- https://lore.kernel.org/all/20240817.shahka3Ee1iy@digikod.net/
- https://www.openwall.com/lists/oss-security/2024/08/17/2
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
-
Introduced385975dca53eb41031d0cbd1de318eb1bc5d6bb9Fixed916c648323fa53b89eedb34a0988ddaf01406117
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced385975dca53eb41031d0cbd1de318eb1bc5d6bb9Fixed0d74fd54db0bd0c0c224bef0da8fc95ea9c9f36c
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced385975dca53eb41031d0cbd1de318eb1bc5d6bb9Fixed16896914bace82d7811c62f3b6d5320132384f49
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced385975dca53eb41031d0cbd1de318eb1bc5d6bb9Fixedb14cc2cf313bd29056fadbc8ecd7f957cf5791ff
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced385975dca53eb41031d0cbd1de318eb1bc5d6bb9Fixed39705a6c29f8a2b93cf5b99528a55366c50014d1
Affected versions
v5.*
v5.12
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
v5.15.100
v5.15.101
v5.15.102
v5.15.103
v5.15.104
v5.15.105
v5.15.106
v5.15.107
v5.15.108
v5.15.109
v5.15.11
v5.15.110
v5.15.111
v5.15.112
v5.15.113
v5.15.114
v5.15.115
v5.15.116
v5.15.117
v5.15.118
v5.15.119
v5.15.12
v5.15.120
v5.15.121
v5.15.122
v5.15.123
v5.15.124
v5.15.125
v5.15.126
v5.15.127
v5.15.128
v5.15.129
v5.15.13
v5.15.130
v5.15.131
v5.15.132
v5.15.133
v5.15.134
v5.15.135
v5.15.136
v5.15.137
v5.15.138
v5.15.139
v5.15.14
v5.15.140
v5.15.141
v5.15.142
v5.15.143
v5.15.144
v5.15.145
v5.15.146
v5.15.147
v5.15.148
v5.15.149
v5.15.15
v5.15.150
v5.15.151
v5.15.152
v5.15.153
v5.15.154
v5.15.155
v5.15.156
v5.15.157
v5.15.158
v5.15.159
v5.15.16
v5.15.160
v5.15.161
v5.15.162
v5.15.163
v5.15.164
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
v5.15.63
v5.15.64
v5.15.65
v5.15.66
v5.15.67
v5.15.68
v5.15.69
v5.15.7
v5.15.70
v5.15.71
v5.15.72
v5.15.73
v5.15.74
v5.15.75
v5.15.76
v5.15.77
v5.15.78
v5.15.79
v5.15.8
v5.15.80
v5.15.81
v5.15.82
v5.15.83
v5.15.84
v5.15.85
v5.15.86
v5.15.87
v5.15.88
v5.15.89
v5.15.9
v5.15.90
v5.15.91
v5.15.92
v5.15.93
v5.15.94
v5.15.95
v5.15.96
v5.15.97
v5.15.98
v5.15.99
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
v6.1.11
v6.1.12
v6.1.13
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
v6.10.1
v6.10.2
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
v6.6.5
v6.6.6
v6.6.7
v6.6.8
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": [
{
"id": "CVE-2024-42318-10d946b0",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@39705a6c29f8a2b93cf5b99528a55366c50014d1",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"101177471413678484831464082299475334547",
"135102161462766770663972707369599611574",
"283477904399186718529989701361764636703",
"208302127748114507171962221871256394986",
"41859366344347844806806267028444969834",
"198693660948333583729818110519032821375",
"153889769867742661538734465725831507340",
"229199975506192439163397501583301117308",
"325674580351528608091679973412065101996",
"265109989747547501295057970324823655192",
"338694098757835121619394276625406879775",
"171094002147225276407236788902852178426",
"315540266710116666766988933064475172175"
]
},
"target": {
"file": "security/landlock/cred.c"
}
},
{
"id": "CVE-2024-42318-670d7f78",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@16896914bace82d7811c62f3b6d5320132384f49",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"101177471413678484831464082299475334547",
"135102161462766770663972707369599611574",
"283477904399186718529989701361764636703",
"208302127748114507171962221871256394986",
"41859366344347844806806267028444969834",
"198693660948333583729818110519032821375",
"153889769867742661538734465725831507340",
"229199975506192439163397501583301117308",
"325674580351528608091679973412065101996",
"265109989747547501295057970324823655192",
"338694098757835121619394276625406879775",
"171094002147225276407236788902852178426",
"315540266710116666766988933064475172175"
]
},
"target": {
"file": "security/landlock/cred.c"
}
},
{
"id": "CVE-2024-42318-8646ed6f",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@916c648323fa53b89eedb34a0988ddaf01406117",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"101177471413678484831464082299475334547",
"135102161462766770663972707369599611574",
"283477904399186718529989701361764636703",
"208302127748114507171962221871256394986",
"41859366344347844806806267028444969834",
"198693660948333583729818110519032821375",
"153889769867742661538734465725831507340",
"229199975506192439163397501583301117308",
"325674580351528608091679973412065101996",
"48438499984738389575269756416384020439",
"255983373058119271455575138464421066281",
"269075527521960081193436841809642838402",
"315540266710116666766988933064475172175"
]
},
"target": {
"file": "security/landlock/cred.c"
}
},
{
"id": "CVE-2024-42318-946258ed",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b14cc2cf313bd29056fadbc8ecd7f957cf5791ff",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"101177471413678484831464082299475334547",
"135102161462766770663972707369599611574",
"283477904399186718529989701361764636703",
"208302127748114507171962221871256394986",
"41859366344347844806806267028444969834",
"198693660948333583729818110519032821375",
"153889769867742661538734465725831507340",
"229199975506192439163397501583301117308",
"325674580351528608091679973412065101996",
"265109989747547501295057970324823655192",
"338694098757835121619394276625406879775",
"171094002147225276407236788902852178426",
"315540266710116666766988933064475172175"
]
},
"target": {
"file": "security/landlock/cred.c"
}
},
{
"id": "CVE-2024-42318-cc5eebdd",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0d74fd54db0bd0c0c224bef0da8fc95ea9c9f36c",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"threshold": 0.9,
"line_hashes": [
"101177471413678484831464082299475334547",
"135102161462766770663972707369599611574",
"283477904399186718529989701361764636703",
"208302127748114507171962221871256394986",
"41859366344347844806806267028444969834",
"198693660948333583729818110519032821375",
"153889769867742661538734465725831507340",
"229199975506192439163397501583301117308",
"325674580351528608091679973412065101996",
"48438499984738389575269756416384020439",
"255983373058119271455575138464421066281",
"269075527521960081193436841809642838402",
"315540266710116666766988933064475172175"
]
},
"target": {
"file": "security/landlock/cred.c"
}
}
]
}