CVE-2022-49434
- Source
- https://cve.org/CVERecord?id=CVE-2022-49434
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49434.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49434
- Downstream
- Related
- Published
- 2025-02-26T02:12:51.068Z
- Modified
- 2026-03-11T07:18:56.273833Z
- Summary
- PCI: Avoid pci_dev_lock() AB/BA deadlock with sriov_numvfs_store()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
PCI: Avoid pcidevlock() AB/BA deadlock with sriovnumvfsstore()
The sysfs sriovnumvfsstore() path acquires the device lock before the config space access lock:
sriovnumvfsstore devicelock # A (1) acquire device lock sriovconfigure vfiopcisriovconfigure # (for example) vfiopcicoresriovconfigure pcidisablesriov sriovdisable pcicfgaccesslock pciwaitcfg # B (4) wait for dev->blockcfg_access == 0
Previously, pcidevlock() acquired the config space access lock before the device lock:
pcidevlock pcicfgaccesslock dev->blockcfgaccess = 1 # B (2) set dev->blockcfgaccess = 1 devicelock # A (3) wait for device lock
Any path that uses pcidevlock(), e.g., pciresetfunction(), may deadlock with sriovnumvfsstore() if the operations occur in the sequence (1) (2) (3) (4).
Avoid the deadlock by reversing the order in pcidevlock() so it acquires the device lock before the config space access lock, the same as the sriovnumvfsstore() path.
[bhelgaas: combined and adapted commit log from Jay Zhou's independent subsequent posting: https://lore.kernel.org/r/20220404062539.1710-1-jianjay.zhou@huawei.com]
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49434.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/2cdd5284035322795b0964f899eefba254cfe483
- https://git.kernel.org/stable/c/59ea6b3ae51df7cd6bfd84c9c0030609b9315622
- https://git.kernel.org/stable/c/a91ee0e9fca9d7501286cfbced9b30a33e52740a
- https://git.kernel.org/stable/c/aed6d4d519210c28817948f34c53b6e058e0456c
- https://git.kernel.org/stable/c/c3c6dc1853b8bf3c718f96fd8480a6eb09ba4831
- https://git.kernel.org/stable/c/c9a81f9ed6ae3554621d6a50220b1bc74b67d81e
- https://git.kernel.org/stable/c/ea047f51172aa68841adef7f52d375002438b8f0
- https://git.kernel.org/stable/c/eff3587b9c01439b738298475e555c028ac9f55e
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49434.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-49434
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
-
Introduced17530e71e0166a37f8e20a9b7bcf1d50ae3cff8eFixedc3c6dc1853b8bf3c718f96fd8480a6eb09ba4831Fixedaed6d4d519210c28817948f34c53b6e058e0456cFixedc9a81f9ed6ae3554621d6a50220b1bc74b67d81eFixedeff3587b9c01439b738298475e555c028ac9f55eFixed2cdd5284035322795b0964f899eefba254cfe483Fixedea047f51172aa68841adef7f52d375002438b8f0Fixed59ea6b3ae51df7cd6bfd84c9c0030609b9315622Fixeda91ee0e9fca9d7501286cfbced9b30a33e52740a
Affected versions
v4.*
v4.12
v4.12-rc2
v4.12-rc3
v4.12-rc4
v4.12-rc5
v4.12-rc6
v4.12-rc7
v4.13
v4.13-rc1
v4.13-rc2
v4.13-rc3
v4.13-rc4
v4.13-rc5
v4.13-rc6
v4.13-rc7
v4.14
v4.14-rc1
v4.14-rc2
v4.14-rc3
v4.14-rc4
v4.14-rc5
v4.14-rc6
v4.14-rc7
v4.14-rc8
v4.14.1
v4.14.10
v4.14.100
v4.14.101
v4.14.102
v4.14.103
v4.14.104
v4.14.105
v4.14.106
v4.14.107
v4.14.108
v4.14.109
v4.14.11
v4.14.110
v4.14.111
v4.14.112
v4.14.113
v4.14.114
v4.14.115
v4.14.116
v4.14.117
v4.14.118
v4.14.119
v4.14.12
v4.14.120
v4.14.121
v4.14.122
v4.14.123
v4.14.124
v4.14.125
v4.14.126
v4.14.127
v4.14.128
v4.14.129
v4.14.13
v4.14.130
v4.14.131
v4.14.132
v4.14.133
v4.14.134
v4.14.135
v4.14.136
v4.14.137
v4.14.138
v4.14.139
v4.14.14
v4.14.140
v4.14.141
v4.14.142
v4.14.143
v4.14.144
v4.14.145
v4.14.146
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v4.14.148
v4.14.149
v4.14.15
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v4.14.193
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v4.14.198
v4.14.199
v4.14.2
v4.14.20
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v4.14.201
v4.14.202
v4.14.203
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v4.14.29
v4.14.3
v4.14.30
v4.14.31
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v4.14.35
v4.14.36
v4.14.37
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v4.14.39
v4.14.4
v4.14.40
v4.14.41
v4.14.42
v4.14.43
v4.14.44
v4.14.45
v4.14.46
v4.14.47
v4.14.48
v4.14.49
v4.14.5
v4.14.50
v4.14.51
v4.14.52
v4.14.53
v4.14.54
v4.14.55
v4.14.56
v4.14.57
v4.14.58
v4.14.59
v4.14.6
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v4.14.9
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v4.14.92
v4.14.93
v4.14.94
v4.14.95
v4.14.96
v4.14.97
v4.14.98
v4.14.99
v4.15
v4.15-rc1
v4.15-rc2
v4.15-rc3
v4.15-rc4
v4.15-rc5
v4.15-rc6
v4.15-rc7
v4.15-rc8
v4.15-rc9
v4.16
v4.16-rc1
v4.16-rc2
v4.16-rc3
v4.16-rc4
v4.16-rc5
v4.16-rc6
v4.16-rc7
v4.17
v4.17-rc1
v4.17-rc2
v4.17-rc3
v4.17-rc4
v4.17-rc5
v4.17-rc6
v4.17-rc7
v4.18
v4.18-rc1
v4.18-rc2
v4.18-rc3
v4.18-rc4
v4.18-rc5
v4.18-rc6
v4.18-rc7
v4.18-rc8
v4.19
v4.19-rc1
v4.19-rc2
v4.19-rc3
v4.19-rc4
v4.19-rc5
v4.19-rc6
v4.19-rc7
v4.19-rc8
v4.19.1
v4.19.10
v4.19.100
v4.19.101
v4.19.102
v4.19.103
v4.19.104
v4.19.105
v4.19.106
v4.19.107
v4.19.108
v4.19.109
v4.19.11
v4.19.110
v4.19.111
v4.19.112
v4.19.113
v4.19.114
v4.19.115
v4.19.116
v4.19.117
v4.19.118
v4.19.119
v4.19.12
v4.19.120
v4.19.121
v4.19.122
v4.19.123
v4.19.124
v4.19.125
v4.19.126
v4.19.127
v4.19.128
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v4.19.13
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v4.19.2
v4.19.20
v4.19.200
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v4.19.228
v4.19.229
v4.19.23
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v4.19.233
v4.19.234
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v4.19.24
v4.19.240
v4.19.241
v4.19.242
v4.19.243
v4.19.244
v4.19.245
v4.19.246
v4.19.25
v4.19.26
v4.19.27
v4.19.28
v4.19.29
v4.19.3
v4.19.30
v4.19.31
v4.19.32
v4.19.33
v4.19.34
v4.19.35
v4.19.36
v4.19.37
v4.19.38
v4.19.39
v4.19.4
v4.19.40
v4.19.41
v4.19.42
v4.19.43
v4.19.44
v4.19.45
v4.19.46
v4.19.47
v4.19.48
v4.19.49
v4.19.5
v4.19.50
v4.19.51
v4.19.52
v4.19.53
v4.19.54
v4.19.55
v4.19.56
v4.19.57
v4.19.58
v4.19.59
v4.19.6
v4.19.60
v4.19.61
v4.19.62
v4.19.63
v4.19.64
v4.19.65
v4.19.66
v4.19.67
v4.19.68
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v4.19.7
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v4.19.72
v4.19.73
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v4.19.75
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v4.19.79
v4.19.8
v4.19.80
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v4.19.85
v4.19.86
v4.19.87
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v4.19.9
v4.19.90
v4.19.91
v4.19.92
v4.19.93
v4.19.94
v4.19.95
v4.19.96
v4.19.97
v4.19.98
v4.19.99
v4.20
v4.20-rc1
v4.20-rc2
v4.20-rc3
v4.20-rc4
v4.20-rc5
v4.20-rc6
v4.20-rc7
v5.*
v5.0
v5.0-rc1
v5.0-rc2
v5.0-rc3
v5.0-rc4
v5.0-rc5
v5.0-rc6
v5.0-rc7
v5.0-rc8
v5.1
v5.1-rc1
v5.1-rc2
v5.1-rc3
v5.1-rc4
v5.1-rc5
v5.1-rc6
v5.1-rc7
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
v5.10.13
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
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v5.10.59
v5.10.6
v5.10.60
v5.10.61
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v5.10.65
v5.10.66
v5.10.67
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v5.10.69
v5.10.7
v5.10.70
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v5.10.75
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v5.10.77
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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
v5.15.5
v5.15.6
v5.15.7
v5.15.8
v5.15.9
v5.16
v5.16-rc1
v5.16-rc2
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v5.5
v5.5-rc1
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v5.5-rc7
v5.6
v5.6-rc1
v5.6-rc2
v5.6-rc3
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
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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
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v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8
Database specific
vanir_signatures
[
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{
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}
},
{
"signature_type": "Function",
"signature_version": "v1",
"target": {
"file": "drivers/pci/pci.c",
"function": "pci_dev_trylock"
},
"id": "CVE-2022-49434-f6db6caf",
"deprecated": false,
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@59ea6b3ae51df7cd6bfd84c9c0030609b9315622",
"digest": {
"function_hash": "36094299141296079534524600064588590568",
"length": 146.0
}
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49434.json"